PSYU3349 Week 5

Which of the following is the NON-PARAMETRIC alternative to a one-way ANOVA?

• Spearman

• Kruskall-Wallis

• Mann-Whitney U

• Neyman-Scott Cluster

• Wilcoxon Signed Rank

What is the purpose of using a reference category when creating dummy variables for categorical independent variables?

• To ensure that all categories are equally represented in the regression model.

• To make interpretation of the regression coefficients easier.

• To reduce the number of variables in the model.

• To improve the accuracy of the regression model.

Suppose you are conducting multiple hypothesis tests with a significance level of α = .05. You have conducted 6 tests, what is the correct Bonferroni-adjusted family-wise error rate?

• 0.30

• 0.025

• 0.0083

• 0.003