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The ABCs of Evaluation: Timeless Techniques for Program and Project Managers, Third Edition by Phyllis Dutwin, John Boulmetis

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More On Data Analysis

Note: You may have learned all you need to know about working with data in Chapter Seven. We have included this appendix for those who need or want to delve more deeply into the subject.

Analyses for Each Level

Different statistics are used to measure central tendency, variability, and analysis of variance depending on the level of data you are dealing with—nominal, ordinal, interval, or ratio. As discussed in Chapter Seven, each level makes certain assumptions about the nature of the data, and these assumptions carry over to the types of statistical analyses appropriate for each.

Measures of Central Tendency

The central tendency is some point at which a data set is split in half. For nominal data that are primarily narrative ...

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