Discussion:
• Download the class data file: Independent T data.csv
• Open the file with JASP.
• Select T-Tests, then Independent- samples t-test.
• Under Tests, select Students and Welch
• Move the independent variable into the Grouping Variable box, and the dependent variable into the Test Variable box.
• Under Assumptions Checks select Equality of Variances
o To determine which t value and df to report you must first check the significance of the Levene's test for homogeneity of variance. If the p value from this test is less than .05 you should report values from the bottom row of the t table (Welch test). Otherwise report values for the top row (Student test).
• Select Descriptives and Descriptives Plots
• Under Additional Statistics, select Location Parameter, Effect Size.
• The output provided includes the results of your t-test analysis.