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DEVISE | Data Analysis

Independent Samples t Test

Prior to the steps below, enter the data as appropriate for the analyses (described elsewhere). As always, the following commands should be typed directly in the R console window.

Obtaining Descriptive Statistics

Get the mean and standard deviation of the dependent variable for each of the levels.

(Outcome~Factor) |> describeMoments()

Obtaining Inferential Statistics

Get the mean difference and its confidence interval.

(Outcome~Factor) |> estimateDifference()

Test the mean difference for statistical significance.

(Outcome~Factor) |> testDifference()

Get the standardized effect size for the mean difference.

(Outcome~Factor) |> standardizeDifference()