This document discusses data collection, tabulation, processing, and analysis. It begins by outlining the need for data collection to support scientific research and problem solving. It then describes various methods of data collection including warranty cards, audits, and mechanical devices. The document emphasizes the importance of processing and analyzing raw data to make it meaningful and test hypotheses. It outlines steps in processing like editing, coding, classification, and tabulation. Finally, it discusses various statistical analysis techniques including measures of central tendency, frequency distributions, correlation, regression, and parametric and non-parametric tests.
Methods of data collection (research methodology)Muhammed Konari
Included all types of data collection.Includes primary data collection and secondary data collection. Described each and every classification of Data collections which are included in KTU Kerala.
Methods of data collection (research methodology)Muhammed Konari
Included all types of data collection.Includes primary data collection and secondary data collection. Described each and every classification of Data collections which are included in KTU Kerala.
For a detailed explanation Watch the Youtube video:
https://youtu.be/YK0GPKuYVfU
Classification of Data, methods- geographical classification, Chronological Classification, Qualitative and Quantitative classification, discrete and continuous variable, grouped frequency distribution, inclusive , exclusive series, cumulative frequency distribution
UNIVARIATE & BIVARIATE ANALYSIS
UNIVARIATE BIVARIATE & MULTIVARIATE
UNIVARIATE ANALYSIS
-One variable analysed at a time
BIVARIATE ANALYSIS
-Two variable analysed at a time
MULTIVARIATE ANALYSIS
-More than two variables analysed at a time
TYPES OF ANALYSIS
DESCRIPTIVE ANALYSIS
INFERENTIAL ANALYSIS
DESCRIPTIVE ANALYSIS
Transformation of raw data
Facilitate easy understanding and interpretation
Deals with summary measures relating to sample data
Eg-what is the average age of the sample?
INFERENTIAL ANALYSIS
Carried out after descriptive analysis
Inferences drawn on population parameters based on sample results
Generalizes results to the population based on sample results
Eg-is the average age of population different from 35?
DESCRIPTIVE ANALYSIS OF UNIVARIATE DATA
1. Prepare frequency distribution of each variable
Missing Data
Situation where certain questions are left unanswered
Analysis of multiple responses
Measures of central tendency
3 measures of central tendency
1.Mean
2.Median
3.Mode
MEAN
Arithmetic average of a variable
Appropriate for interval and ratio scale data
x
MEDIAN
Calculates the middle value of the data
Computed for ratio, interval or ordinal scale.
Data needs to be arranged in ascending or descending order
MODE
Point of maximum frequency
Should not be computed for ordinal or interval data unless grouped.
Widely used in business
MEASURE OF DISPERSION
Measures of central tendency do not explain distribution of variables
4 measures of dispersion
1.Range
2.Variance and standard deviation
3.Coefficient of variation
4.Relative and absolute frequencies
DESCRIPTIVE ANALYSIS OF BIVARIATE DATA
There are three types of measure used.
1.Cross tabulation
2.Spearmans rank correlation coefficient
3.Pearsons linear correlation coefficient
Cross Tabulation
Responses of two questions are combined
Spearman’s rank order correlation coefficient.
Used in case of ordinal data
Validate data
Questionnaire checking
Edit acceptable questionnaires
Code the questionnaires
Keypunch the data
Clean the data set
Statistically adjust the data
Store the data set for analysis
Analyse data
Dear viewers Check Out my other piece of works at___ https://healthkura.com
Data Collection (Methods/ Tools/ Techniques), Primary & Secondary Data, Assessment of Qualitative Data, Qualitative & Quantitative Data, Data Processing
Presentation Contents:
- Introduction to data
- Classification of data
- Collection of data
- Methods of data collection
- Assessment of qualitative data
- Processing of data
- Editing
- Coding
- Tabulation
- Graphical representation
If anyone is really interested about research related topics particularly on data collection, this presentation will be the best reference.
For Further Reading
- Biostatistics by Prem P. Panta
- Fundamentals of Research Methodology and Statistics by Yogesh k. Singh
- Research Design by J. W. Creswell
- Internet
Research methodology - Analysis of DataThe Stockker
Processing & Analysis of Data, Data editing, Benefits of data editing, Data coding, Classification of data, CLASSIFICATION ACCORDING THE ATTRIBUTES, CLASSIFICATION ON THE BASIS OF INTERVAL, TABULATION of data, Types of tables, Graphing of data, Bar chart, Pie chart, Line graph, histogram, Polygon / ogive, Analysis of Data, Descriptive Analysis, Uni-Variate Analysis, Bivariate Analysis, Multi-Variate Analysis, Causal Analysis, Inferential Analysis, PARAMETRIC TESTS, Non parametric Test,
Research Objective
Research is an organized investigation of a problem in which there is an attempt to gain solution to a problem.
To get right solution of a right problem, clearly defined objectives are very important.
Clearly defined objectives enlighten the way in which the researcher has to proceed.
What is Research Objective?
A research objective is a clear, concise, declarative statement, which provides direction to investigate the variables.
Generally research objective focus on the ways to measure the variables , such as to identify or describe them.
Sometime objectives are directed towards identifying the relationship or difference between two variables.
Research objective are the results sought by the researcher at the end of the research process, i.e. what the researcher will be able to achieve at the end of the research study.
The objectives of a research project summarize what is to be achieved by the study.
Objective should be closely related to the statement of the problem.
CHARACTERISTICS OF RESEARCH OBJECTIVES
Research objectives is a concrete statement describing what the research is trying to achieve. A well-worded objective will be SMART, i.e Specific, Measurable, Attainable, Realistic, & Time-bound.
Research objective should be Relevant, Feasible, Logical, Observable, Unequivocal & Measurable.
Objective is a purpose that can be reasonably achieved within the expected timeframe &with the available resources.
The objective or research project summarizes what is to be achieved by the study.
The research objectives are the specific accomplishment the researchers hopes to achieve by the study
The objective include obtaining answers to research questions or testing the research hypothesis.
Why need Research Objectives?
The formulation of research objectives will help researcher to:
With clearly defined objectives, the researchers can focus on the study.
Avoid the collection of data which are not strictly necessary for understanding & solving problem that he or she has defined.
The formulation of objectives organize the study in clearly defined parts or phases.
Properly formulated, specific objectives will facilitate the development of research methodology & will help to orient the collection, analysis, interpretation, &utilization of data.
Types of Research Objectives
General Objective
General objectives are broad goals to be achieved.
The general objectives of the study state what the researcher expects to achieve by the study in general terms.
General objectives are usually less in number.
Practical applications and analysis in Research Methodology Hafsa Ranjha
practical application in research, reviews of qualitative and mixed method studies, analysis, processing the data, data editing , data coding , classification of data, analysis of data, parametric test, non parametric test in
Research Methodology
For a detailed explanation Watch the Youtube video:
https://youtu.be/YK0GPKuYVfU
Classification of Data, methods- geographical classification, Chronological Classification, Qualitative and Quantitative classification, discrete and continuous variable, grouped frequency distribution, inclusive , exclusive series, cumulative frequency distribution
UNIVARIATE & BIVARIATE ANALYSIS
UNIVARIATE BIVARIATE & MULTIVARIATE
UNIVARIATE ANALYSIS
-One variable analysed at a time
BIVARIATE ANALYSIS
-Two variable analysed at a time
MULTIVARIATE ANALYSIS
-More than two variables analysed at a time
TYPES OF ANALYSIS
DESCRIPTIVE ANALYSIS
INFERENTIAL ANALYSIS
DESCRIPTIVE ANALYSIS
Transformation of raw data
Facilitate easy understanding and interpretation
Deals with summary measures relating to sample data
Eg-what is the average age of the sample?
INFERENTIAL ANALYSIS
Carried out after descriptive analysis
Inferences drawn on population parameters based on sample results
Generalizes results to the population based on sample results
Eg-is the average age of population different from 35?
DESCRIPTIVE ANALYSIS OF UNIVARIATE DATA
1. Prepare frequency distribution of each variable
Missing Data
Situation where certain questions are left unanswered
Analysis of multiple responses
Measures of central tendency
3 measures of central tendency
1.Mean
2.Median
3.Mode
MEAN
Arithmetic average of a variable
Appropriate for interval and ratio scale data
x
MEDIAN
Calculates the middle value of the data
Computed for ratio, interval or ordinal scale.
Data needs to be arranged in ascending or descending order
MODE
Point of maximum frequency
Should not be computed for ordinal or interval data unless grouped.
Widely used in business
MEASURE OF DISPERSION
Measures of central tendency do not explain distribution of variables
4 measures of dispersion
1.Range
2.Variance and standard deviation
3.Coefficient of variation
4.Relative and absolute frequencies
DESCRIPTIVE ANALYSIS OF BIVARIATE DATA
There are three types of measure used.
1.Cross tabulation
2.Spearmans rank correlation coefficient
3.Pearsons linear correlation coefficient
Cross Tabulation
Responses of two questions are combined
Spearman’s rank order correlation coefficient.
Used in case of ordinal data
Validate data
Questionnaire checking
Edit acceptable questionnaires
Code the questionnaires
Keypunch the data
Clean the data set
Statistically adjust the data
Store the data set for analysis
Analyse data
Dear viewers Check Out my other piece of works at___ https://healthkura.com
Data Collection (Methods/ Tools/ Techniques), Primary & Secondary Data, Assessment of Qualitative Data, Qualitative & Quantitative Data, Data Processing
Presentation Contents:
- Introduction to data
- Classification of data
- Collection of data
- Methods of data collection
- Assessment of qualitative data
- Processing of data
- Editing
- Coding
- Tabulation
- Graphical representation
If anyone is really interested about research related topics particularly on data collection, this presentation will be the best reference.
For Further Reading
- Biostatistics by Prem P. Panta
- Fundamentals of Research Methodology and Statistics by Yogesh k. Singh
- Research Design by J. W. Creswell
- Internet
Research methodology - Analysis of DataThe Stockker
Processing & Analysis of Data, Data editing, Benefits of data editing, Data coding, Classification of data, CLASSIFICATION ACCORDING THE ATTRIBUTES, CLASSIFICATION ON THE BASIS OF INTERVAL, TABULATION of data, Types of tables, Graphing of data, Bar chart, Pie chart, Line graph, histogram, Polygon / ogive, Analysis of Data, Descriptive Analysis, Uni-Variate Analysis, Bivariate Analysis, Multi-Variate Analysis, Causal Analysis, Inferential Analysis, PARAMETRIC TESTS, Non parametric Test,
Research Objective
Research is an organized investigation of a problem in which there is an attempt to gain solution to a problem.
To get right solution of a right problem, clearly defined objectives are very important.
Clearly defined objectives enlighten the way in which the researcher has to proceed.
What is Research Objective?
A research objective is a clear, concise, declarative statement, which provides direction to investigate the variables.
Generally research objective focus on the ways to measure the variables , such as to identify or describe them.
Sometime objectives are directed towards identifying the relationship or difference between two variables.
Research objective are the results sought by the researcher at the end of the research process, i.e. what the researcher will be able to achieve at the end of the research study.
The objectives of a research project summarize what is to be achieved by the study.
Objective should be closely related to the statement of the problem.
CHARACTERISTICS OF RESEARCH OBJECTIVES
Research objectives is a concrete statement describing what the research is trying to achieve. A well-worded objective will be SMART, i.e Specific, Measurable, Attainable, Realistic, & Time-bound.
Research objective should be Relevant, Feasible, Logical, Observable, Unequivocal & Measurable.
Objective is a purpose that can be reasonably achieved within the expected timeframe &with the available resources.
The objective or research project summarizes what is to be achieved by the study.
The research objectives are the specific accomplishment the researchers hopes to achieve by the study
The objective include obtaining answers to research questions or testing the research hypothesis.
Why need Research Objectives?
The formulation of research objectives will help researcher to:
With clearly defined objectives, the researchers can focus on the study.
Avoid the collection of data which are not strictly necessary for understanding & solving problem that he or she has defined.
The formulation of objectives organize the study in clearly defined parts or phases.
Properly formulated, specific objectives will facilitate the development of research methodology & will help to orient the collection, analysis, interpretation, &utilization of data.
Types of Research Objectives
General Objective
General objectives are broad goals to be achieved.
The general objectives of the study state what the researcher expects to achieve by the study in general terms.
General objectives are usually less in number.
Practical applications and analysis in Research Methodology Hafsa Ranjha
practical application in research, reviews of qualitative and mixed method studies, analysis, processing the data, data editing , data coding , classification of data, analysis of data, parametric test, non parametric test in
Research Methodology
Review of "Survey Research Methods & Design in Psychology"James Neill
Reviews the 150 hour, third year psychology unit which examined survey research methods, with an emphasis on the second-half of the unit on MLR, ANOVA, power, and effect size.
Levelwise PageRank with Loop-Based Dead End Handling Strategy : SHORT REPORT ...Subhajit Sahu
Abstract — Levelwise PageRank is an alternative method of PageRank computation which decomposes the input graph into a directed acyclic block-graph of strongly connected components, and processes them in topological order, one level at a time. This enables calculation for ranks in a distributed fashion without per-iteration communication, unlike the standard method where all vertices are processed in each iteration. It however comes with a precondition of the absence of dead ends in the input graph. Here, the native non-distributed performance of Levelwise PageRank was compared against Monolithic PageRank on a CPU as well as a GPU. To ensure a fair comparison, Monolithic PageRank was also performed on a graph where vertices were split by components. Results indicate that Levelwise PageRank is about as fast as Monolithic PageRank on the CPU, but quite a bit slower on the GPU. Slowdown on the GPU is likely caused by a large submission of small workloads, and expected to be non-issue when the computation is performed on massive graphs.
Opendatabay - Open Data Marketplace.pptxOpendatabay
Opendatabay.com unlocks the power of data for everyone. Open Data Marketplace fosters a collaborative hub for data enthusiasts to explore, share, and contribute to a vast collection of datasets.
First ever open hub for data enthusiasts to collaborate and innovate. A platform to explore, share, and contribute to a vast collection of datasets. Through robust quality control and innovative technologies like blockchain verification, opendatabay ensures the authenticity and reliability of datasets, empowering users to make data-driven decisions with confidence. Leverage cutting-edge AI technologies to enhance the data exploration, analysis, and discovery experience.
From intelligent search and recommendations to automated data productisation and quotation, Opendatabay AI-driven features streamline the data workflow. Finding the data you need shouldn't be a complex. Opendatabay simplifies the data acquisition process with an intuitive interface and robust search tools. Effortlessly explore, discover, and access the data you need, allowing you to focus on extracting valuable insights. Opendatabay breaks new ground with a dedicated, AI-generated, synthetic datasets.
Leverage these privacy-preserving datasets for training and testing AI models without compromising sensitive information. Opendatabay prioritizes transparency by providing detailed metadata, provenance information, and usage guidelines for each dataset, ensuring users have a comprehensive understanding of the data they're working with. By leveraging a powerful combination of distributed ledger technology and rigorous third-party audits Opendatabay ensures the authenticity and reliability of every dataset. Security is at the core of Opendatabay. Marketplace implements stringent security measures, including encryption, access controls, and regular vulnerability assessments, to safeguard your data and protect your privacy.
As Europe's leading economic powerhouse and the fourth-largest hashtag#economy globally, Germany stands at the forefront of innovation and industrial might. Renowned for its precision engineering and high-tech sectors, Germany's economic structure is heavily supported by a robust service industry, accounting for approximately 68% of its GDP. This economic clout and strategic geopolitical stance position Germany as a focal point in the global cyber threat landscape.
In the face of escalating global tensions, particularly those emanating from geopolitical disputes with nations like hashtag#Russia and hashtag#China, hashtag#Germany has witnessed a significant uptick in targeted cyber operations. Our analysis indicates a marked increase in hashtag#cyberattack sophistication aimed at critical infrastructure and key industrial sectors. These attacks range from ransomware campaigns to hashtag#AdvancedPersistentThreats (hashtag#APTs), threatening national security and business integrity.
🔑 Key findings include:
🔍 Increased frequency and complexity of cyber threats.
🔍 Escalation of state-sponsored and criminally motivated cyber operations.
🔍 Active dark web exchanges of malicious tools and tactics.
Our comprehensive report delves into these challenges, using a blend of open-source and proprietary data collection techniques. By monitoring activity on critical networks and analyzing attack patterns, our team provides a detailed overview of the threats facing German entities.
This report aims to equip stakeholders across public and private sectors with the knowledge to enhance their defensive strategies, reduce exposure to cyber risks, and reinforce Germany's resilience against cyber threats.
2. NEED FOR DATA COLLECTION
Scientific research
Verify the hypothesis
Substantiate various arguments in research findings
Solution to problem
Helps in drawing generalization
3. OTHER METHODS OF DATA COLLECTION
Warranty cards
Distributor / store audits
Pantry audits
Consumer panel
Mechanical devices
Eye camera, Pupilometric camera
Pscychogalvanometer, Motion picture camera, audiometers
5. NEED FOR PROCESSING AND
ANALYSING
Essential for scientific study
To make the raw data meaningful,
To test null hypothesis,
To obtain the significant results,
To draw some inferences or make generalization, and
To estimate parameters
6. EDITING
Detect errors and omissions and correct them
Assure that data are accurate, consistent, complete, homogenous
Field editing-what the latter has written in abbreviated and/or in illegible form at
the time of recording the respondents’ responses.
Difficult for others to decipher.
As soon as possible after the interview.
Must not correct errors of omission
7. CENTRAL EDITING
All forms -Completed and returned to the office.
May correct the obvious errors (entry in the wrong place).
On missing replies, sometimes determine the proper answer by reviewing the
other information in the schedule.
At times, the respondent can be contacted for clarification.
The editor must strike out the answer if the same is inappropriate and he has no
basis for determining the correct answer or the response. In such a case an
editing entry of ‘no answer’ is called for.
All the wrong replies, which are quite obvious, must be dropped from the final
results, especially in the context of mail surveys.
8. CODING
Assigning numerals or other symbols to answers so that responses can be put
into a limited number of categories or classes.
Such classes should be appropriate to the research problem under consideration.
Exhaustive , mutually exclusive
Uni-dimensionality
Critical information required for analysis.
Coding decisions -designing stage of the questionnaire.
Easy tabulation
9. CLASSIFICATION
Arranging data in groups or classes – common characteristics
Types of classification:
Attributes- simple and manifold
Class intervals- inclusive, exclusive
11-20, 21-30
10-20, 20-30
How many classes ?
Sex
10. TABULATION
Orderly arrangement of data in columns and rows.
conserves space.
comparison.
summation of items
detection of errors and omissions.
statistical computations
11. Components Of Table
1. Table number
2. Title of the table
3. Caption / Box head
4. Stub
5. Body / Field
6. Head note
7. Foot note
8. Source data
14. PRINCIPLES OF TABULATION
Clear, concise and adequate title.
Distinct number to facilitate reference
Column headings and row headings of table should be clear and brief.
Units of measurement under each heading or subheading must always be
indicated.
Explanatory footnotes –beneath the table
Source-just below the table.
Abbreviation, ditto should be avoided
15. PROBLEMS IN PROCESSING
DK response
Respondent may not know the answer or researcher fail in obtaining the
appropriate information.
DK response in separate category
16. ANALYSIS OF DATA
Analysis means categorising, ordering, manipulating, and summarising of data to
obtain answer to research questions.
Descriptive analysis
Correlation analysis
Causal analysis / regression analysis
17.
18. FREQUENCY DISTRIBUTION
Manner in which different frequencies are distributed over different classes.
Represented in graphical form.
1) Histogram
2) Bar graph
3) Pie diagram
4) Frequency polygon
5) Cumulative frequency curve / ogive curve
19. HISTOGRAM
Two dimension
Continous data
Similar to bar chart without gaps
Distribution of studied group according to their height
0
5
10
15
20
25
30
100- 110- 120- 130- 140- 150-
height in cm
numberofindividuals
26. SKEWNESS AND KURTOSIS
Skewness- asymmetry
Positively skewed distribution
Kurtosis- peakedness
Leptokurtic
27. PARAMETRIC OR STANDARD TEST
Sample is large
Population have normal distribution
Observations – independent
Variables- interval or ratio scale
Eg. t- test, z test, F test
28. NON- PARAMETRIC TEST
Distribution free test
Normal distribution- doubtful
Small sample size
Data – ranks or different between pairs
Eg. Chi square test, The Mann- whitney U test, kendall W, rho
29. IMPORTANT ANALYSES
t -Test:
Comparing the means of two independent groups
Sample size < 30
Paired t-test:
ANOVA:
Statistical approach for determining the means of two or more populations are
equal.
One way ANOVA
ANCOVA
30. CORRELATION
Intensity of association between 2 variable
Ranges from + 1 to -1
BISERIAL CORRELATION:
One variable is continous and other is dichotomous.
POINT BISERIAL CORRELATION:
One of the 2 variables is a genuine dichotomy ( can’t measured on interval scale)
32. DIFFERENT ANALYSIS
PATH ANALYSIS:
Clear picture of the direct and indirect effects of the independent variables on the
dependent variable.
DISCRIMINANT FUNCTION ANALYSIS:
Necessary to find out how populations actually discriminate or differ
CANONICAL ANALYSIS:
Explaining several dependent variables by a set of independent variables.
FACTOR ANALYSIS:
Resolve large set of measured variables by few categories.
33. CONTINUED
META ANALYSIS:
Set of techniques for summarising the findings of many studies
CLUSTER ANALYSIS:
Classify objects into small number of mutually exclusive and exhaustive groups.
Better understanding of buyer behaviour
MULTIDIMENSIONAL SCALING:
Data reduction technique
Uncover the hidden structure of a set of data.
35. MCNEMAR TEST
Significance of change
Research involve before and after situation and data is nominal
Effectiveness of a particular treatment.
36. MANN WHITNEY U TEST
Test whether two independent groups have been drawn from same population.
Powerful test, alternative to parametric t test when researcher wants to avoid t
test assumptions
37. KRUSKAL WALLIS – ONE WAY ANOVA
H test.
Applied to more than 2 samples of observation
Nonparametric substitute for simple ANOVA
38. FRIEDMAN TWO WAY ANOVA
Testing the null hypothesis of difference between treatments by ranking the data
KENDALL COEFFICIENT OF CONCORDANCE:W
Measures extent of association among several sets of ranking of events, objects
Studies of cluster of variables
39. OTHER MEASURES
INDEX NUMBERS:
Changes in various economic and social phenomena
Approximate indicators
TIME SERIES ANALYSIS:
40. REFERENCES
Research methods in social sciences and extension education by G.L.Ray & Sagar
Mondal
Research methodology – methods and techniques (2nd revised edition) by C.R.
Kothari.
Essentials of research design and methodology by Geoffrey Marczyk, David
DeMatteo, and David Festinger.
Research methodology by Ranjit kumar
Fundamentals of research methodology and statistics by Yogesh kumar singh.
41. QUIZ
1)Warranty cards is an example for
a) Primary data b) Secondary data c) both d) none
2) Commonly used program for statistical analysis in social sciences is
a) SAS b) SPSS c) GENSTAT d) STATA
3) Which of the following is not an example for standard test ?
a)T test b) chi square test c) Z test d) F test
4) Which test is suitable for small sample size
a) Parametric b) Non parametric c) Standard d) None
5) Vertical bar diagram without gap between the bars is
a) Ogive b) frequency polygon c) Histogram d) Bar diagram
42. QUIZ
6) Mode is obtained from
a) Ogive b) Histogram c) frequency curve d) Lorenz curve
7) Average which is applicable to all sorts of data
a) AM b) GM c) HM d) Median
8) Quickest measure of centrality is
a) AM b) GM c) Mode d) Median
9) Which is used for measuring intelligence
a) Median b) Mode c) AM d) GM
10) Which test is used for the significance of changes ?
a) Chi square b) Mann Whitney U c) Mc Nemar d) t test