SOURCEBOOK

JASP | Data Analysis

OneWay ANOVA

Obtaining Multiple-Sample Inferential Statistics

  1. First, load the two sample 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 Factor (Independent Variable) to the “Fixed Factors” box.

  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 factor (Independent Variable) name from the left-hand box for “Marginal means” to the right-hand box.

  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.