Multiple choice

Which of these tests are useful in comparing three or more means for statistical significance?

  1. T-test

  2. F-test

  3. ANOVA

  4. Z-test

  5. Chi-squared test
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C Correct answer
Explanation

ANOVA provides a statistical test of whether or not the means of several groups are equal, and therefore generalizes the t-test to more than two groups. Doing multiple two-sample t-tests would result in an increased chance of committing a type I error. For this reason, ANOVAs are useful in comparing (testing) three or more means (groups or variables) for statistical significance.

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