PS 225 Study Guide - Final Guide: Test Statistic, Null Hypothesis

• School: Saginaw Valley State University
• Department: Political Science
• Course: PS 225

Document Summary

For the pearson"s correlation you report the value of the correlation coefficient and the p value. So, the interpretation for the correlation from step 2 would look like this . Alternative hypothesis: there was a significant correlation between respondent"s income in constant dollars and highest year of school completed, r = . 305, p = . 000. Null hypothesis: there was no significant correlation between the respondent"s number of siblings and the number of days of poor physical health in the last thirty days, r = . 027 , p = . 49. Specifying a theory and hypothesis, and report results paired (dependent) samples t-test: The method here is to report the means for both samples. Theory: students will demonstrate increased knowledge on a posttest after instruction. Null hypothesis: no difference exists between pre and posttest scores. Specifying a theory and hypothesis, and report results one sample t-test: Alternative hypothesis: some difference exists between pre and posttest scores.