Introduction to Data Analysis Handbook - AED Center for Early Care ...

Important Tip: Some of these procedures can be performed manually. Many people
confuse data analysis with complicated computer programs but simple data analysis
procedures involve using a pencil, note pad and a calculator. Other procedures can
be accomplished using features of Excel software. (See Appendix B)
Variance Measures
Questions to consider when working with variance measures include:
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•
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How do scores differ?
What are the differences between individuals in a group?
What is the range of outcomes?
Example of variance measures:
50 participants rate a training using…..
I acquire new knowledge and/or skills
Strongly Disagree Disagree Agree Strongly Agree
o o o o
A. Results to the statement: i acquired new knowledge and/or skills.
Strongly Disagree Disagree Agree Strongly Agree
1 1
in this example the variance is small (or, low variability). Staff strongly disagreed and felt
that the training did not lead them to acquire new knowledge and/or skills.
B. in a second training consider the responses to the statement: I acquired new knowledge
and/or skills.
Strongly Disagree Disagree Agree Strongly Agree
0 0
As in the previous example the variance is small (or, low variability). But unlike the
previous example, staff strongly agreed and felt that the training lead them to acquire new
knowledge and/or skills.
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