Statistical Skills

You might choose to do one or more of the following to help develop students' statistical skills.

  1. Review the calculations for degrees of freedom (see Box 12.2, p. 344) and have students calculate the degrees of freedom for a variety of factorial studies.

  2. Have students practice interpreting ANOVA summary tables by presenting a summary table from a recent article and selectively whiting out certain cells (the significance levels, the MSE, the df) and have students determine the missing entry.

  3. Have students interpret ordinal interactions (see Fgures 12.3b, p. 373).

  4. Illustrate how blocking increases power.

  5. Have students do ANOVA by hand.

  6. Introduce nonparametric alternatives to ANOVA.

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