Which of the following is an assumption that must be made in Step 1 of the ANOVA test?
A) Independent random samples
B) Dependent random samples
C) Level of measurement is nominal
D) Stratified random samples

Question

Quizplus · Accepted Answer

In Step 1 of the ANOVA test, the assumption of independent random samples must be made. This means that data within each group must be independent of data in other groups, and each observation has an equal chance of being selected for the sample. Dependent random samples (B) violate the assumption of independence, and stratified random samples (D) do not necessarily ensure independence of the data. The level of measurement (C) is not relevant to Step 1 of the ANOVA test.

Which of the Following Is an Assumption That Must Be