Author: Anonymous

In a two-factor ANOVA with replication, the Excel row labeled “Columns” corresponds to:

If interaction is significant, Module 9 recommends interpreting the main effects first and interaction second.

Why does Module 9 warn that “eyeballing” means and variances after ANOVA should not be presented as factual proof?

In Module 9, the main reason to perform a two-factor ANOVA with replication is to examine:

Single-factor ANOVA examines only one factor common to two or more samples.

Module 9 explains that ANOVA compares distributions by considering both the separation between sample means and the variance within samples.

A significant ANOVA result tells the analyst exactly which two groups differ.

A one-way ANOVA comparing three employee groups is significant. The group averages are 61, 78, and 80. Which statement is most defensible without further testing?

In Module 9’s ice cream example, ketchup on ice cream illustrates interaction because:

ANOVA evaluates differences among groups by considering both the differences between group means and the variation within the groups.