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What kinds of research questions can we answer using analysis of variance (ANOVA)? Provide an example.

What kinds of research questions can we answer using analysis of variance (ANOVA)? Provide an example.

Math   Statistics-And-Probability   
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Answer #1

ANOVA (Analysis of Variance)

ANOVA is a statistical technique that assesses potential differences in a scale-level dependent variable by a nominal-level variable having 2 or more categories.

For example, an ANOVA can examine potential differences in IQ scores by Country (US vs. Canada vs. Italy vs. Spain).

Types of Research Questions the ANOVA Examines with examples

One-way ANOVA: Are there differences in GPA by grade level (freshmen vs. sophomores vs. juniors)?

Two-way ANOVA: Are there differences in GPA by grade level (freshmen vs. sophomores vs. juniors) and gender (male vs. female)?

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