Suppose your treatment objective is to improve self-esteem for a group of clients and you measure each client one time before treatment begins and one time at the end of the treatment on a self-esteem scale that gives higher scores for higher self-esteem. Your mean pretest score was 16.8 and your mean posttest score was 21.5. Your data were subjected to the paired t test with these results: n = 21; t = 1.3; p > .05. Answer the following three questions: (1) What must you find in order to report that your data supported your study hypothesis? (2) Did your data support your hypothesis? (3) Explain why it did or did not.
What will be an ideal response?
Ans: In order to report that your data supported your study hypothesis, you must have data that went in the hypothesized direction and the data must be statistically significant. The data for this study did not support the study hypothesis because the data were not found to be statistically significant.
Learning Objective: 16-5: Use a chart to select an inferential statistic for testing your hypothesis in evaluative research.
Cognitive Domain: Application
Answer Location: Using Inferential Statistics to Test Your Hypothesis
Difficulty Level: Hard
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