In what situations should the Wilcoxon rank sum test be used rather than the independent samples t test?
Answer to relevant QuestionsExplain briefly why there are two different versions of the t test on the SPSS printout, and how you decide which one is more appropriate. If there is an overall significant F in a one way ANOVA, can we conclude that the group membership or treatment variable caused the observed differences in the group means? Why or why not? What is Ho for a one way ANOVA? If Ho is rejected, does that imply that each mean is significantly different from every other mean? Discuss how nonlinear relations may result in small r's. Here is a small set of (real) data that shows GNP per capita (X), and mean life satisfaction, for a set of 19 nations (Y). (Insert Table 9.2 about here) a. Enter the data into SPSS. b. Run the procedure; obtain the mean ...
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