Briefly comment on the difference between the use of a bootstrapped CI (for the unstandardized estimate of a * b) versus the use of the Sobel test. What programs can be used to obtain the estimates for each case? Which approach is less dependent on assumptions of normality?
Answer to relevant QuestionsRefer to Figure 16.1. If a, b, and a*b are all statistically significant (and large enough to be of practical or clinical importance), and c’ is not statistically significant and/or not large enough to be judged ...When adjusted group means are compared with unadjusted group means, which of the following can occur? (Answer yes or no to each.) • The adjusted group means can be closer together than the unadjusted group means. • The ...What assumptions about the data should be satisfied for a DA? What types of data screening should be performed to assess whether assumptions are violated? In words, what null hypothesis is tested by the Box M value on the SPSS GLM printout for a MANOVA? Do you want this Box M test to be statistically significant? Give reasons for your answer. If Box M is statistically ...What is an “optimally weighted linear composite”? What is a “unit-weighted linear composite”? What are the relative advantages and disadvantages of these two ways of forming scores?
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