quality control tools to improve the manufacturing and service industry productivity

1. 7 Quality Control Tools
7 Quality Control Tools
with ISO
with ISO
Group 7 presents....

2. “Quality is never an accident. It is
always the result of intelligent
effort.”

3. INTRODUCTION
INTRODUCTION
The 7 QC tools are simple statistical
tools used for problem-solving.
The 7 tools of Quality is the
designation given to a fixed set of
graphical techniques identified as
the most helpful in troubleshooting
issues related to quality.

4. ISO (International Organization for Standardization)
is a non-governmental organization that sets
international standards for a wide variety of
products, services, and processes. These standards
ensure quality, safety, and efficiency for businesses
and consumers around the world.
The 7 QC tools are not directly tied to a specific ISO
standard. However, ISO 9001, the most widely used
ISO standard for quality management systems,
emphasizes the importance of using data and
continual improvement to achieve quality
objectives.

5. IMPORTANCE Analyze the
Production
Process
Identifying
Major
Problems
Control
Fluctuations
of Product
Quality
Strategies for
Preventing
Future Defects

6. Why 7 QC Tools?
Why 7 QC Tools?
01 02 03 04
05 06 07 08
Improve
Quality
Increase
Markets
Decrease
Costs
Stay in
Business
Improve
Productivity
Decrease
Price
Provide
more Jobs
Return on
Investment

7. 7 Quality
7 Quality
Control Tools
Control Tools
Check
Sheets
Stratifi-
cation
Pareto
Charts
Cause and
Effect
Diagram
Histogram
Control
Charts
Scatter
Diagram

8. CHECK
SHEETS
The check sheet is a form (document) used
to collect data in real time at the location
where the data is generated. 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.
The check sheet is a form (document) used
to collect data in real time at the location
where the data is generated. 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.

10. STRATIFICATION
Stratification analysis is a quality assurance tool used
to sort data, objects, and people into separate and
distinct groups. It's a quality assurance tool that can
help you determine the meaning of data by revealing
patterns that might not otherwise be visible when it's
been lumped together.

12. PARETO
CHART
A Pareto chart is a graphical tool used in
7QC Tools to show the relative
proportions of occurrence of different
values. Pareto charts are inspired by
Italian economist Vilfredo Pareto and his
80/20 principle. The 80/20 rule states
that roughly 80% of the effects come
from 20% of the causes. This means that
you should try to find the 20% of defect
types that cause 80% of all defects.

14. CAUSE &
EFFECT
DIAGRAM
A cause-and-effect diagram, also known
as a fishbone diagram, is one of the
seven basic quality tools for process
improvement. It's a visual way to
identify the potential causes of an effect
or problem, and then organize the
factors that may contribute to it. The
problem or effect is displayed at the
head of the fish, and the other causes
are displayed as branches from the main
arrow.

16. HISTOGRAM Histograms are often used to display the distribution
of data. The histogram is shown as a series of vertical
bars representing the frequency or relative frequency
of data values, with the height of the bar being
proportional to the quantity of data it represents. The
Data spread in the process is the result of the
variation that exists in the process. Histograms are
useful for detecting patterns and trends in data. They
also provide insight into the nature of the data.

18. CONTROL
CHARTS
A control chart is a graphic display of data that
shows how well a process or system performs over
time. It displays the performance of a process in
terms of its ability to meet specifications. Control
charts help determine if a process is working
correctly, identify trends, and take necessary
corrective action before it is too late.
Control Charts can be used to determine whether a
process is operating within acceptable limits, to
spot unusual patterns in the process and to
determine whether there is any trend in the data

19. CONTROL
CHARTS
Assignable Causes: These are specific, identifiable
factors that cause the process to deviate from its
normal performance. When an assignable cause
occurs, a data point falls outside the control limits
on the chart, signaling a problem. Assignable causes
can be internal or external to the process.
Common Causes: These are the inherent variations
that are always present in any process, even when
everything is running smoothly. These variations are
due to the natural randomness of the system and
cannot be easily eliminated. They are reflected by
the data points falling within the control limits on
the chart. Common causes are often managed
through statistical process control techniques to
ensure the process remains stable and predictable.

21. SCATTER DIAGRAM
A scatter diagram is one of the seven quality control tools in
project management and is used to plan and monitor
operations to improve quality-related issues in an
organization. It is a graphical statistical tool that visually
depicts the relationship between two variables. The
horizontal axis represents one set of observations
(independent variable), while the vertical axis represents the
second set of observations (dependent variable).

23. Thank you
Thank you
very much!
very much!
Group Members :
Akshit Jain
Bhavit Rajan
Niyati Bagherwal
Siddharth Sanger
Sneha Tharani