To the Analyze Menu

Click Analyze, Compare Means and then One-Way ANOVA.

One-Way ANOVA box

This box will appear. You will see your two variable names in the window on the left. Your goal will be to transfer each to a corresponding box on the right.

Transfer the IV

Click on the IV name to highlight it. Transfer this variable over to the Factor box by clicking on the corresponding arrow.

You will see…

Your IV will appear in the Factor box. 

Transfer your DV

Now it’s time to move the DV over. Click on your DV to highlight it. Move your DV over to the Dependent List window by clicking on the corresponding arrow.

You will see this

Your DV will appear in the Dependent List window. When you see this, click the Options button.

One-Way ANOVA: Options box

This box will appear with a variety of options. Click the check boxes next to Descriptive, Homogeneity of Variance and Means plot.

You will see checks

When you click each box, a check will appear to indicate that it has been selected. Check the Descriptives and Homogeneity of variance boxes. Click the Continue button when finished.

Back to the One-Way ANOVA box

You will see this box again. Click the Post Hoc button.

One-Way ANOVA: Post Hoc Multiple Comparisons box

This will appear. You will see many options. These options represent various types of tests that you can conduct. Select at least one option from the Equal Variances Assumed area and at least one option from the Equal Variances Not Assumed area. To select an option, click on the box next to the name and a check will appear.

Our Example

For this example experiment, I will choose Tukey from the Equal Variances Assumed area. That is a popular choice. I will choose Dunnett’s T3 from the Equal Variances not Assumed area. Your professor may ask you to choose a different test and that’s ok too. These tests vary in terms of how strict they are. Click the Continue button when you are finished.

Back to the One-Way ANOVA box

In this box, click the OK button and wait a few moments for processing.

You will see results

You will probably see so much information that you will have to scroll down the right hand side to see it all.

Save the results

To a meaningful place with a meaningful name. I decided to call this example file “Effect of Various Amounts of Sugar on Words Remembered Output.spo.” 

Background | Enter Data | Analyze Data | Interpret Data | Report Data