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JASP | Data Analysis

Factorial ANOVA

Obtaining Factorial Inferential Statistics

  1. First, load the factorial data file that you previously created (described elsewhere). Be sure that the data file looks as you intended.

  2. Select the “ANOVA → ANOVA” option.

Obtaining the Significance Test

  1. A set of options will then appear for you to choose the variables and statistics of interest.

  2. Select the outcome variable and click the arrow to move it into the “Dependent Variable” box.

  3. Move the multiple Factors (Independent Variables) to the “Fixed Factors” box. (The interaction term will be automatically generated in the output.)

  4. Output will automatically appear on the right side of the window. Output can be copied and pasted into other software for printing.

Obtaining Additional Statistics

  1. Though some basic summary statistics are displayed by default, you can make changes by expanding the “Additional Options” drop-down menu.

  2. Move the factors (Independent Variable) name from the left-hand box for “Marginal means” to the right-hand box. (If you wish cell means for the factorial design, be sure to move the interaction term as well.)

  3. Select options that are important for you: “Estimates of effect size” will display the chosen statistics; and “Descriptive statistics” will offer means and standard deviations for each group.

  4. Updated output will automatically appear on the right side of the window. Output can be copied and pasted into other software for printing.