The premise of variance analysis: at different levels, the mean of each population obeys the normal distribution with the same variance.

Homogeneity test of variance: Homogeneity test of variance is adopted.

Open the data to be processed in spss and execute: analysis-comparison mean-one-way ANOVA on the menu bar.

Open the one-way ANOVA dialog box.

In this dialog box, put the dependent variable into the dependent variable list, put the independent variable into the factor, click post hoc, select snk and lsd, and return to confirm ok.

The studio of graduate students majoring in statistics is original, please don't paste it complicated.