SlideShare a Scribd company logo
1 of 7
Process based qualitymanagement system
In this file, you can ref useful information about process based quality management system such
as process based quality management systemforms, tools for process based quality management
system, process based quality management systemstrategies … If you need more assistant for
process based quality management system, please leave your comment at the end of file.
Other useful material for process based quality management system:
• qualitymanagement123.com/23-free-ebooks-for-quality-management
• qualitymanagement123.com/185-free-quality-management-forms
• qualitymanagement123.com/free-98-ISO-9001-templates-and-forms
• qualitymanagement123.com/top-84-quality-management-KPIs
• qualitymanagement123.com/top-18-quality-management-job-descriptions
• qualitymanagement123.com/86-quality-management-interview-questions-and-answers
I. Contents of process based quality management system
==================
This post is part1 in a series on the topic of the “Process Based QMS”.
The “Process Based” approach to implementation of your QMS is one method of making your
QMS work for you, not against you. This approach allows your QMS to add value vs adding
headaches and cost. Historically many organizations have implemented the “silo based quality
system” meaning a compliance/ procedure based QMS that does not identify or evaluate how
effective the QMS actually is.
The “Process Based Approach” merely means looking at your Quality system as a series of
linked value adding processes that form your QMS or system.
The first step in implementation of a “process Based QMS” is to identify the critical or core
business processes that make up your QMS. Some examples are Contract Review, Marketing,
Purchasing, Quality Planning, etc…
Once your company has identified these processes you will want to map them out using any
number of good process mapping tools that exist. My favorite is the SIPOC diagram. SIPOC
stands for S= Supplier, I= Inputs, P= Process, O= Outputs, and C= Customer and is a good
method of completely understanding the information flow and requirements of your specific
process from a high level. It also forces you to look at the outputs of the process so you can
determine what metrics can and should be monitored or measured. One important aspect of the
“Process Based” approach is that it is a closed loop approach meaning you will know the
effectiveness of the process in meeting it’s objectives.
The next step is to identify the interrelationship of all of the identified processes to understand
the flow of inputs and outputs to each other. Example – the output of the Marketing
process may be a solid sales lead which should result in an input of a feasible quote for
the Quote process.
Typically a macro level process map is used to illustrate the relationship of the QMS processes to
each other.
In the next blog I will get into the specifics of the process itself in detail.
Remember – if you cannot measure it you cannot improve it.
==================
III. Quality management tools
1. Check sheet
The check sheet is a form (document) used to collect data
in real time at the location where the data is generated.
The data it captures can be quantitative or qualitative.
When the information is quantitative, the check sheet is
sometimes called a tally sheet.
The defining characteristic of a check sheet is that data
are recorded by making marks ("checks") on it. A typical
check sheet is divided into regions, and marks made in
different regions have different significance. Data are
read by observing the location and number of marks on
the sheet.
Check sheets typically employ a heading that answers the
Five Ws:
 Who filled out the check sheet
 What was collected (what each check represents,
an identifying batch or lot number)
 Where the collection took place (facility, room,
apparatus)
 When the collection took place (hour, shift, day
of the week)
 Why the data were collected
2. Control chart
Control charts, also known as Shewhart charts
(after Walter A. Shewhart) or process-behavior
charts, in statistical process control are tools used
to determine if a manufacturing or business
process is in a state of statistical control.
If analysis of the control chart indicates that the
process is currently under control (i.e., is stable,
with variation only coming from sources common
to the process), then no corrections or changes to
process control parameters are needed or desired.
In addition, data from the process can be used to
predict the future performance of the process. If
the chart indicates that the monitored process is
not in control, analysis of the chart can help
determine the sources of variation, as this will
result in degraded process performance.[1] A
process that is stable but operating outside of
desired (specification) limits (e.g., scrap rates
may be in statistical control but above desired
limits) needs to be improved through a deliberate
effort to understand the causes of current
performance and fundamentally improve the
process.
The control chart is one of the seven basic tools of
quality control.[3] Typically control charts are
used for time-series data, though they can be used
for data that have logical comparability (i.e. you
want to compare samples that were taken all at
the same time, or the performance of different
individuals), however the type of chart used to do
this requires consideration.
3. Pareto chart
A Pareto chart, named after Vilfredo Pareto, is a type
of chart that contains both bars and a line graph, where
individual values are represented in descending order
by bars, and the cumulative total is represented by the
line.
The left vertical axis is the frequency of occurrence,
but it can alternatively represent cost or another
important unit of measure. The right vertical axis is
the cumulative percentage of the total number of
occurrences, total cost, or total of the particular unit of
measure. Because the reasons are in decreasing order,
the cumulative function is a concave function. To take
the example above, in order to lower the amount of
late arrivals by 78%, it is sufficient to solve the first
three issues.
The purpose of the Pareto chart is to highlight the
most important among a (typically large) set of
factors. In quality control, it often represents the most
common sources of defects, the highest occurring type
of defect, or the most frequent reasons for customer
complaints, and so on. Wilkinson (2006) devised an
algorithm for producing statistically based acceptance
limits (similar to confidence intervals) for each bar in
the Pareto chart.
4. Scatter plot Method
A scatter plot, scatterplot, or scattergraph is a type of
mathematical diagram using Cartesian coordinates to
display values for two variables for a set of data.
The data is displayed as a collection of points, each
having the value of one variable determining the position
on the horizontal axis and the value of the other variable
determining the position on the vertical axis.[2] This kind
of plot is also called a scatter chart, scattergram, scatter
diagram,[3] or scatter graph.
A scatter plot is used when a variable exists that is under
the control of the experimenter. If a parameter exists that
is systematically incremented and/or decremented by the
other, it is called the control parameter or independent
variable and is customarily plotted along the horizontal
axis. The measured or dependent variable is customarily
plotted along the vertical axis. If no dependent variable
exists, either type of variable can be plotted on either axis
and a scatter plot will illustrate only the degree of
correlation (not causation) between two variables.
A scatter plot can suggest various kinds of correlations
between variables with a certain confidence interval. For
example, weight and height, weight would be on x axis
and height would be on the y axis. Correlations may be
positive (rising), negative (falling), or null (uncorrelated).
If the pattern of dots slopes from lower left to upper right,
it suggests a positive correlation between the variables
being studied. If the pattern of dots slopes from upper left
to lower right, it suggests a negative correlation. A line of
best fit (alternatively called 'trendline') can be drawn in
order to study the correlation between the variables. An
equation for the correlation between the variables can be
determined by established best-fit procedures. For a linear
correlation, the best-fit procedure is known as linear
regression and is guaranteed to generate a correct solution
in a finite time. No universal best-fit procedure is
guaranteed to generate a correct solution for arbitrary
relationships. A scatter plot is also very useful when we
wish to see how two comparable data sets agree with each
other. In this case, an identity line, i.e., a y=x line, or an
1:1 line, is often drawn as a reference. The more the two
data sets agree, the more the scatters tend to concentrate in
the vicinity of the identity line; if the two data sets are
numerically identical, the scatters fall on the identity line
exactly.
5.Ishikawa diagram
Ishikawa diagrams (also called fishbone diagrams,
herringbone diagrams, cause-and-effect diagrams, or
Fishikawa) are causal diagrams created by Kaoru
Ishikawa (1968) that show the causes of a specific
event.[1][2] Common uses of the Ishikawa diagram are
product design and quality defect prevention, to identify
potential factors causing an overall effect. Each cause or
reason for imperfection is a source of variation. Causes
are usually grouped into major categories to identify these
sources of variation. The categories typically include
 People: Anyone involved with the process
 Methods: How the process is performed and the
specific requirements for doing it, such as policies,
procedures, rules, regulations and laws
 Machines: Any equipment, computers, tools, etc.
required to accomplish the job
 Materials: Raw materials, parts, pens, paper, etc.
used to produce the final product
 Measurements: Data generated from the process
that are used to evaluate its quality
 Environment: The conditions, such as location,
time, temperature, and culture in which the process
operates
6. Histogram method
A histogram is a graphical representation of the
distribution of data. It is an estimate of the probability
distribution of a continuous variable (quantitative
variable) and was first introduced by Karl Pearson.[1] To
construct a histogram, the first step is to "bin" the range of
values -- that is, divide the entire range of values into a
series of small intervals -- and then count how many
values fall into each interval. A rectangle is drawn with
height proportional to the count and width equal to the bin
size, so that rectangles abut each other. A histogram may
also be normalized displaying relative frequencies. It then
shows the proportion of cases that fall into each of several
categories, with the sum of the heights equaling 1. The
bins are usually specified as consecutive, non-overlapping
intervals of a variable. The bins (intervals) must be
adjacent, and usually equal size.[2] The rectangles of a
histogram are drawn so that they touch each other to
indicate that the original variable is continuous.[3]
III. Other topics related to Process based quality management system (pdf
download)
quality management systems
quality management courses
quality management tools
iso 9001 quality management system
quality management process
quality management system example
quality system management
quality management techniques
quality management standards
quality management policy
quality management strategy
quality management books

More Related Content

What's hot

Software quality management question bank
Software quality management question bankSoftware quality management question bank
Software quality management question bankselinasimpson3001
 
Documented quality management system
Documented quality management systemDocumented quality management system
Documented quality management systemselinasimpson2901
 
The importance of quality management
The importance of quality managementThe importance of quality management
The importance of quality managementselinasimpson1501
 
Quality and performance management
Quality and performance managementQuality and performance management
Quality and performance managementselinasimpson2201
 
Data quality management tools
Data quality management toolsData quality management tools
Data quality management toolsselinasimpson1601
 
Quality management system objectives
Quality management system objectivesQuality management system objectives
Quality management system objectivesselinasimpson361
 
Quality risk management training
Quality risk management trainingQuality risk management training
Quality risk management trainingselinasimpson3001
 
Advantages of quality management
Advantages of quality managementAdvantages of quality management
Advantages of quality managementselinasimpson2001
 
Continuous quality management
Continuous quality managementContinuous quality management
Continuous quality managementselinasimpson341
 
Open source quality management system
Open source quality management systemOpen source quality management system
Open source quality management systemselinasimpson2001
 
Quality management presentation
Quality management presentationQuality management presentation
Quality management presentationselinasimpson1501
 
Examples of quality management
Examples of quality managementExamples of quality management
Examples of quality managementselinasimpson2201
 
Quality management system courses
Quality management system coursesQuality management system courses
Quality management system coursesselinasimpson311
 
Quality management system planning
Quality management system planningQuality management system planning
Quality management system planningselinasimpson1601
 
Example of quality management
Example of quality managementExample of quality management
Example of quality managementselinasimpson2401
 

What's hot (20)

Software quality management question bank
Software quality management question bankSoftware quality management question bank
Software quality management question bank
 
Documented quality management system
Documented quality management systemDocumented quality management system
Documented quality management system
 
The importance of quality management
The importance of quality managementThe importance of quality management
The importance of quality management
 
Quality and performance management
Quality and performance managementQuality and performance management
Quality and performance management
 
Quality driven management
Quality driven managementQuality driven management
Quality driven management
 
Data quality management tools
Data quality management toolsData quality management tools
Data quality management tools
 
Quality management system objectives
Quality management system objectivesQuality management system objectives
Quality management system objectives
 
Quality risk management training
Quality risk management trainingQuality risk management training
Quality risk management training
 
Advantages of quality management
Advantages of quality managementAdvantages of quality management
Advantages of quality management
 
Continuous quality management
Continuous quality managementContinuous quality management
Continuous quality management
 
Open source quality management system
Open source quality management systemOpen source quality management system
Open source quality management system
 
Quality management policy
Quality management policyQuality management policy
Quality management policy
 
Pmbok quality management
Pmbok quality managementPmbok quality management
Pmbok quality management
 
Quality management plans
Quality management plansQuality management plans
Quality management plans
 
Quality management presentation
Quality management presentationQuality management presentation
Quality management presentation
 
Examples of quality management
Examples of quality managementExamples of quality management
Examples of quality management
 
Quality management system courses
Quality management system coursesQuality management system courses
Quality management system courses
 
Quality management planning
Quality management planningQuality management planning
Quality management planning
 
Quality management system planning
Quality management system planningQuality management system planning
Quality management system planning
 
Example of quality management
Example of quality managementExample of quality management
Example of quality management
 

Viewers also liked

Management responsibility
Management responsibilityManagement responsibility
Management responsibilityAhmed Said
 
ISO 9000 AND 14000 PPT
ISO 9000 AND 14000 PPT ISO 9000 AND 14000 PPT
ISO 9000 AND 14000 PPT Sainath Kari
 
ISO 9001-2015 Revision Training Presentation
ISO 9001-2015 Revision Training PresentationISO 9001-2015 Revision Training Presentation
ISO 9001-2015 Revision Training PresentationDQS Inc.
 
Typical Quality Management System Based On Iso 9001 2008
Typical Quality Management System Based On Iso 9001 2008Typical Quality Management System Based On Iso 9001 2008
Typical Quality Management System Based On Iso 9001 2008Isidro Sid Calayag
 

Viewers also liked (7)

Management responsibility
Management responsibilityManagement responsibility
Management responsibility
 
Stratergy
StratergyStratergy
Stratergy
 
ISO 9000 AND 14000 PPT
ISO 9000 AND 14000 PPT ISO 9000 AND 14000 PPT
ISO 9000 AND 14000 PPT
 
ISO 9001-2015 Revision Training Presentation
ISO 9001-2015 Revision Training PresentationISO 9001-2015 Revision Training Presentation
ISO 9001-2015 Revision Training Presentation
 
Typical Quality Management System Based On Iso 9001 2008
Typical Quality Management System Based On Iso 9001 2008Typical Quality Management System Based On Iso 9001 2008
Typical Quality Management System Based On Iso 9001 2008
 
Introduction to ISO 9001:2015
Introduction to ISO 9001:2015Introduction to ISO 9001:2015
Introduction to ISO 9001:2015
 
The new ISO 9001:2015
The new ISO 9001:2015The new ISO 9001:2015
The new ISO 9001:2015
 

Similar to Process based quality management system

Certified quality management system
Certified quality management systemCertified quality management system
Certified quality management systemselinasimpson1701
 
Iso 9001 quality management system
Iso 9001 quality management systemIso 9001 quality management system
Iso 9001 quality management systemselinasimpson0201
 
Software for quality management
Software for quality managementSoftware for quality management
Software for quality managementselinasimpson341
 
Electronic quality management system
Electronic quality management systemElectronic quality management system
Electronic quality management systemselinasimpson2401
 
Quality management system training courses
Quality management system training coursesQuality management system training courses
Quality management system training coursesselinasimpson311
 
Purpose of quality management
Purpose of quality managementPurpose of quality management
Purpose of quality managementselinasimpson2301
 
Continuous improvement quality management
Continuous improvement quality managementContinuous improvement quality management
Continuous improvement quality managementselinasimpson381
 
Masters in quality management
Masters in quality managementMasters in quality management
Masters in quality managementselinasimpson0501
 
Quality management organization
Quality management organizationQuality management organization
Quality management organizationselinasimpson2601
 
Quality management in the imaging sciences
Quality management in the imaging sciencesQuality management in the imaging sciences
Quality management in the imaging sciencesselinasimpson1701
 
Data quality management definition
Data quality management definitionData quality management definition
Data quality management definitionselinasimpson311
 
Quality management conference
Quality management conferenceQuality management conference
Quality management conferenceselinasimpson311
 
Quality management definition
Quality management definitionQuality management definition
Quality management definitionselinasimpson0101
 

Similar to Process based quality management system (18)

Certified quality management system
Certified quality management systemCertified quality management system
Certified quality management system
 
Iso 9001 quality management system
Iso 9001 quality management systemIso 9001 quality management system
Iso 9001 quality management system
 
Agile quality management
Agile quality managementAgile quality management
Agile quality management
 
Software for quality management
Software for quality managementSoftware for quality management
Software for quality management
 
Electronic quality management system
Electronic quality management systemElectronic quality management system
Electronic quality management system
 
Quality management system training courses
Quality management system training coursesQuality management system training courses
Quality management system training courses
 
Purpose of quality management
Purpose of quality managementPurpose of quality management
Purpose of quality management
 
Quality management cycle
Quality management cycleQuality management cycle
Quality management cycle
 
Quality management software
Quality management softwareQuality management software
Quality management software
 
Continuous improvement quality management
Continuous improvement quality managementContinuous improvement quality management
Continuous improvement quality management
 
Masters in quality management
Masters in quality managementMasters in quality management
Masters in quality management
 
Quality management seminars
Quality management seminarsQuality management seminars
Quality management seminars
 
Quality management office
Quality management officeQuality management office
Quality management office
 
Quality management organization
Quality management organizationQuality management organization
Quality management organization
 
Quality management in the imaging sciences
Quality management in the imaging sciencesQuality management in the imaging sciences
Quality management in the imaging sciences
 
Data quality management definition
Data quality management definitionData quality management definition
Data quality management definition
 
Quality management conference
Quality management conferenceQuality management conference
Quality management conference
 
Quality management definition
Quality management definitionQuality management definition
Quality management definition
 

More from selinasimpson2801

Explain how quality management can be measured
Explain how quality management can be measuredExplain how quality management can be measured
Explain how quality management can be measuredselinasimpson2801
 
Supplier quality management process
Supplier quality management processSupplier quality management process
Supplier quality management processselinasimpson2801
 
Quality management system processes
Quality management system processesQuality management system processes
Quality management system processesselinasimpson2801
 
Quality management system implementation
Quality management system implementationQuality management system implementation
Quality management system implementationselinasimpson2801
 
Quality management system for construction
Quality management system for constructionQuality management system for construction
Quality management system for constructionselinasimpson2801
 
Quality management system flowchart
Quality management system flowchartQuality management system flowchart
Quality management system flowchartselinasimpson2801
 
Quality management review template
Quality management review templateQuality management review template
Quality management review templateselinasimpson2801
 
Quality management questionnaire
Quality management questionnaireQuality management questionnaire
Quality management questionnaireselinasimpson2801
 
Quality management introduction
Quality management introductionQuality management introduction
Quality management introductionselinasimpson2801
 
Quality management consultancy
Quality management consultancyQuality management consultancy
Quality management consultancyselinasimpson2801
 
Production quality management
Production quality managementProduction quality management
Production quality managementselinasimpson2801
 
Iso 9001 quality management standard
Iso 9001 quality management standardIso 9001 quality management standard
Iso 9001 quality management standardselinasimpson2801
 
Fda quality management system
Fda quality management systemFda quality management system
Fda quality management systemselinasimpson2801
 

More from selinasimpson2801 (14)

Explain how quality management can be measured
Explain how quality management can be measuredExplain how quality management can be measured
Explain how quality management can be measured
 
Supplier quality management process
Supplier quality management processSupplier quality management process
Supplier quality management process
 
Quality management system processes
Quality management system processesQuality management system processes
Quality management system processes
 
Quality management system implementation
Quality management system implementationQuality management system implementation
Quality management system implementation
 
Quality management system for construction
Quality management system for constructionQuality management system for construction
Quality management system for construction
 
Quality management system flowchart
Quality management system flowchartQuality management system flowchart
Quality management system flowchart
 
Quality management review template
Quality management review templateQuality management review template
Quality management review template
 
Quality management questionnaire
Quality management questionnaireQuality management questionnaire
Quality management questionnaire
 
Quality management introduction
Quality management introductionQuality management introduction
Quality management introduction
 
Quality management consultancy
Quality management consultancyQuality management consultancy
Quality management consultancy
 
Production quality management
Production quality managementProduction quality management
Production quality management
 
Iso 9001 quality management standard
Iso 9001 quality management standardIso 9001 quality management standard
Iso 9001 quality management standard
 
Hotel quality management
Hotel quality managementHotel quality management
Hotel quality management
 
Fda quality management system
Fda quality management systemFda quality management system
Fda quality management system
 

Process based quality management system

  • 1. Process based qualitymanagement system In this file, you can ref useful information about process based quality management system such as process based quality management systemforms, tools for process based quality management system, process based quality management systemstrategies … If you need more assistant for process based quality management system, please leave your comment at the end of file. Other useful material for process based quality management system: • qualitymanagement123.com/23-free-ebooks-for-quality-management • qualitymanagement123.com/185-free-quality-management-forms • qualitymanagement123.com/free-98-ISO-9001-templates-and-forms • qualitymanagement123.com/top-84-quality-management-KPIs • qualitymanagement123.com/top-18-quality-management-job-descriptions • qualitymanagement123.com/86-quality-management-interview-questions-and-answers I. Contents of process based quality management system ================== This post is part1 in a series on the topic of the “Process Based QMS”. The “Process Based” approach to implementation of your QMS is one method of making your QMS work for you, not against you. This approach allows your QMS to add value vs adding headaches and cost. Historically many organizations have implemented the “silo based quality system” meaning a compliance/ procedure based QMS that does not identify or evaluate how effective the QMS actually is. The “Process Based Approach” merely means looking at your Quality system as a series of linked value adding processes that form your QMS or system. The first step in implementation of a “process Based QMS” is to identify the critical or core business processes that make up your QMS. Some examples are Contract Review, Marketing, Purchasing, Quality Planning, etc… Once your company has identified these processes you will want to map them out using any number of good process mapping tools that exist. My favorite is the SIPOC diagram. SIPOC stands for S= Supplier, I= Inputs, P= Process, O= Outputs, and C= Customer and is a good method of completely understanding the information flow and requirements of your specific process from a high level. It also forces you to look at the outputs of the process so you can determine what metrics can and should be monitored or measured. One important aspect of the
  • 2. “Process Based” approach is that it is a closed loop approach meaning you will know the effectiveness of the process in meeting it’s objectives. The next step is to identify the interrelationship of all of the identified processes to understand the flow of inputs and outputs to each other. Example – the output of the Marketing process may be a solid sales lead which should result in an input of a feasible quote for the Quote process. Typically a macro level process map is used to illustrate the relationship of the QMS processes to each other. In the next blog I will get into the specifics of the process itself in detail. Remember – if you cannot measure it you cannot improve it. ================== III. Quality management tools 1. Check sheet The check sheet is a form (document) used to collect data in real time at the location where the data is generated. The data it captures can be quantitative or qualitative. When the information is quantitative, the check sheet is sometimes called a tally sheet. The defining characteristic of a check sheet is that data are recorded by making marks ("checks") on it. A typical check sheet is divided into regions, and marks made in different regions have different significance. Data are read by observing the location and number of marks on the sheet. Check sheets typically employ a heading that answers the Five Ws:  Who filled out the check sheet  What was collected (what each check represents, an identifying batch or lot number)  Where the collection took place (facility, room, apparatus)  When the collection took place (hour, shift, day
  • 3. of the week)  Why the data were collected 2. Control chart Control charts, also known as Shewhart charts (after Walter A. Shewhart) or process-behavior charts, in statistical process control are tools used to determine if a manufacturing or business process is in a state of statistical control. If analysis of the control chart indicates that the process is currently under control (i.e., is stable, with variation only coming from sources common to the process), then no corrections or changes to process control parameters are needed or desired. In addition, data from the process can be used to predict the future performance of the process. If the chart indicates that the monitored process is not in control, analysis of the chart can help determine the sources of variation, as this will result in degraded process performance.[1] A process that is stable but operating outside of desired (specification) limits (e.g., scrap rates may be in statistical control but above desired limits) needs to be improved through a deliberate effort to understand the causes of current performance and fundamentally improve the process. The control chart is one of the seven basic tools of quality control.[3] Typically control charts are used for time-series data, though they can be used for data that have logical comparability (i.e. you want to compare samples that were taken all at the same time, or the performance of different individuals), however the type of chart used to do this requires consideration. 3. Pareto chart
  • 4. A Pareto chart, named after Vilfredo Pareto, is a type of chart that contains both bars and a line graph, where individual values are represented in descending order by bars, and the cumulative total is represented by the line. The left vertical axis is the frequency of occurrence, but it can alternatively represent cost or another important unit of measure. The right vertical axis is the cumulative percentage of the total number of occurrences, total cost, or total of the particular unit of measure. Because the reasons are in decreasing order, the cumulative function is a concave function. To take the example above, in order to lower the amount of late arrivals by 78%, it is sufficient to solve the first three issues. The purpose of the Pareto chart is to highlight the most important among a (typically large) set of factors. In quality control, it often represents the most common sources of defects, the highest occurring type of defect, or the most frequent reasons for customer complaints, and so on. Wilkinson (2006) devised an algorithm for producing statistically based acceptance limits (similar to confidence intervals) for each bar in the Pareto chart. 4. Scatter plot Method A scatter plot, scatterplot, or scattergraph is a type of mathematical diagram using Cartesian coordinates to display values for two variables for a set of data. The data is displayed as a collection of points, each having the value of one variable determining the position on the horizontal axis and the value of the other variable determining the position on the vertical axis.[2] This kind of plot is also called a scatter chart, scattergram, scatter diagram,[3] or scatter graph. A scatter plot is used when a variable exists that is under
  • 5. the control of the experimenter. If a parameter exists that is systematically incremented and/or decremented by the other, it is called the control parameter or independent variable and is customarily plotted along the horizontal axis. The measured or dependent variable is customarily plotted along the vertical axis. If no dependent variable exists, either type of variable can be plotted on either axis and a scatter plot will illustrate only the degree of correlation (not causation) between two variables. A scatter plot can suggest various kinds of correlations between variables with a certain confidence interval. For example, weight and height, weight would be on x axis and height would be on the y axis. Correlations may be positive (rising), negative (falling), or null (uncorrelated). If the pattern of dots slopes from lower left to upper right, it suggests a positive correlation between the variables being studied. If the pattern of dots slopes from upper left to lower right, it suggests a negative correlation. A line of best fit (alternatively called 'trendline') can be drawn in order to study the correlation between the variables. An equation for the correlation between the variables can be determined by established best-fit procedures. For a linear correlation, the best-fit procedure is known as linear regression and is guaranteed to generate a correct solution in a finite time. No universal best-fit procedure is guaranteed to generate a correct solution for arbitrary relationships. A scatter plot is also very useful when we wish to see how two comparable data sets agree with each other. In this case, an identity line, i.e., a y=x line, or an 1:1 line, is often drawn as a reference. The more the two data sets agree, the more the scatters tend to concentrate in the vicinity of the identity line; if the two data sets are numerically identical, the scatters fall on the identity line exactly.
  • 6. 5.Ishikawa diagram Ishikawa diagrams (also called fishbone diagrams, herringbone diagrams, cause-and-effect diagrams, or Fishikawa) are causal diagrams created by Kaoru Ishikawa (1968) that show the causes of a specific event.[1][2] Common uses of the Ishikawa diagram are product design and quality defect prevention, to identify potential factors causing an overall effect. Each cause or reason for imperfection is a source of variation. Causes are usually grouped into major categories to identify these sources of variation. The categories typically include  People: Anyone involved with the process  Methods: How the process is performed and the specific requirements for doing it, such as policies, procedures, rules, regulations and laws  Machines: Any equipment, computers, tools, etc. required to accomplish the job  Materials: Raw materials, parts, pens, paper, etc. used to produce the final product  Measurements: Data generated from the process that are used to evaluate its quality  Environment: The conditions, such as location, time, temperature, and culture in which the process operates 6. Histogram method
  • 7. A histogram is a graphical representation of the distribution of data. It is an estimate of the probability distribution of a continuous variable (quantitative variable) and was first introduced by Karl Pearson.[1] To construct a histogram, the first step is to "bin" the range of values -- that is, divide the entire range of values into a series of small intervals -- and then count how many values fall into each interval. A rectangle is drawn with height proportional to the count and width equal to the bin size, so that rectangles abut each other. A histogram may also be normalized displaying relative frequencies. It then shows the proportion of cases that fall into each of several categories, with the sum of the heights equaling 1. The bins are usually specified as consecutive, non-overlapping intervals of a variable. The bins (intervals) must be adjacent, and usually equal size.[2] The rectangles of a histogram are drawn so that they touch each other to indicate that the original variable is continuous.[3] III. Other topics related to Process based quality management system (pdf download) quality management systems quality management courses quality management tools iso 9001 quality management system quality management process quality management system example quality system management quality management techniques quality management standards quality management policy quality management strategy quality management books