1) Answer: d. between-condition variability; explained variability
Explanation: Within-group variation (sometimes called error group or error variance) is a term used in ANOVA tests. It refers to variations caused by differences within individual groups (or levels). In other words, not all the values within each group (e.g. means) are the same.
Within-group variation (sometimes called error group or error variance) is a term used in ANOVA tests. It refers to variations caused by differences within individual groups (or levels). In other words, not all the values within each group (e.g. means) are the same.
2) Answer: b. marginal means vary
explanation: ANOVA compares the means by it variability so main effect can occur only if marginal variability of main effect would vary.
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