analysis, presentation, and uses of data, part i
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Copyright 2010, The World Bank Group. All Rights Reserved.
Analysis, Presentation, and Uses of Data, Part I
Copyright 2010, The World Bank Group. All Rights Reserved.
Overview
Data analysis
Importance of objective data analysis
How to analyze labor statistics
Visual presentation of data
Users and uses of labor statistics
Dissemination
2
Copyright 2010, The World Bank Group. All Rights Reserved.
Analysis: The Link between Data and Understanding
3
Copyright 2010, The World Bank Group. All Rights Reserved.
What surveys give us:
Data
4
Copyright 2010, The World Bank Group. All Rights Reserved.
What we want: Answers to questions
Are people able to find work?
Are good jobs available?
Who is faring best in the labor market?
Who is struggling?
How does the current situation compare to the past?
5
Copyright 2010, The World Bank Group. All Rights Reserved.
How do we go from data…
to assessment?
6
Copyright 2010, The World Bank Group. All Rights Reserved.
Why do analysis?
Educate officials, policymakers, and others:
• Describe a situation• Classify the component parts of
a situation• Help assess why something
happened• Forecast/project what may
happen in the future
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Copyright 2010, The World Bank Group. All Rights Reserved.
Objective Analysis
Impartiality evident by values in action Unbiased in subject matter and presentation
– Is the glass half full or half empty?• It is a .5 liter glass with 250 ml of liquid
Scientific and transparent methodsEqual access to data for all users
8
Copyright 2010, The World Bank Group. All Rights Reserved.
Data Analysis
Focus on data analysis at these times:
• When the survey is in the design phase,• When detailed plans are being made for data collection,• After the data are collected, and• As the report is being written and reviewed.
9
Copyright 2010, The World Bank Group. All Rights Reserved.
Data Analysis
Know the limitations of the data:
– Sample size– Trends– Sampling error– Nonsampling error– Impacts of redesigns and other changes– Breaks in a series
10
Copyright 2010, The World Bank Group. All Rights Reserved.
Role of Analyst
Judgment
Experience
Understanding of situation
Technical ability
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Copyright 2010, The World Bank Group. All Rights Reserved.
Levels of analysis
Descriptive– simplest; present facts; summarization
Causal– examine selected variables; more difficult to attribute
causation
Projection and forecasting– most complex
12
Copyright 2010, The World Bank Group. All Rights Reserved.
Levels of analysis
Descriptive– simplest; present facts; summarization
Causal– examine selected variables; more difficult to attribute
causation
Projection and forecasting– most complex
13
Copyright 2010, The World Bank Group. All Rights Reserved.
Levels of analysis
Descriptive– simplest; present facts; summarization
Causal– examine selected variables; more difficult to attribute
causation
Projection and forecasting– most complex
14
Copyright 2010, The World Bank Group. All Rights Reserved.
Quantitative analysis
Measures of central tendency– Mean– Median– Mode
Measures of dispersion– Range– Standard deviation
Measures of association
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