To expand on @Dan_Obermiller , if you have a data table
age1.PNG
You can move the data into the form required for the Anova analysis by using
Tables==>Split
Fill the dialog box out as shown below
age2.PNG
Click OK, and you will get a data table like this
Age3.PNG
Now go to
Analyze==>Fit Y by X
and fill out the dialog box as:
age4.PNG
Click OK and the platform will generate
age6.PNG
Now go to the red triangle and select "Means Anova" and you will get
age5.PNG
Your Analysis of Variance analysis
Jim