Suppose that you a part of a team that has been analyzing data from an impact evaluation that a one-group pretest-posttest design. Measures of social support were obtained before and after the intervention using the same instrument. They are continuous. The pre-intervention social support variable appears in the dataset as SSPRE, and the post-intervention appears as SSPOST. A paired t-test was conducted and you have been presented with the output appearing in Appendix 3. How would you quantify the estimated effect of the intervention in terms of a mean difference, and do the statistical tests provide support for the effectiveness of this intervention?

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To quantify the estimated effect of the intervention in terms of a mean difference you can look at t... View the full answer