SOURCEBOOK

EASI | Data Analysis

Factorial ANOVA

Prior to the steps below, enter the data as appropriate for the analyses (described elsewhere).

Obtaining Descriptive Statistics

Get the mean and standard deviation of the dependent variable for each of the levels. The “by” option tells EASI how to split the data.

(Outcome~FactorA) |> describeMoments(by = FactorB)

Obtaining Inferential Statistics

Get the analysis of variance source table.

(Outcome~FactorA) |> describeFactorial(by = FactorB)

Test the main effects for statistical significance.

(Outcome~FactorA) |> testFactorial(by = FactorB)

Get the proportion of variance accounted for by the main effects.

(Outcome~FactorA) |> estimateFactorial(by = FactorB)