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Performance Evaluation: Proven Approaches for Improving Program and Organizational Performance by Ingrid Guerra-López

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MEASURES OF RELATIONSHIP

In some instances, evaluation questions focus on the relationship between two scores or factors. For instance, you might want to know if high performance in one area is related to high (or low) performance in another area, or if one participant characteristic is related to another characteristic. These might affect decisions about admission of potential participants into a particular program. You want to know whether performance in these two different areas is correlated. To answer this question, you compare the two sets of data by using a correlation coefficient, or r.

The correlation coefficient is a number ranging from .00 to 1. It indicates the degree of relationship between two sets of scores. The closer the coefficient ...

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