Two-way ANOVA, also called two-factor ANOVA, determines how a response is affected by two factors. For example, you might measure a response to three different drugs in both men and women. In this example, drug treatment is one factor and gender is the other.
A note of caution for statistical novices
Deciding which factor defines rows and which defines columns?
Entering data for two-way ANOVA
Entering repeated measures data
Missing values and two-way ANOVA
Point of confusion: ANOVA with a quantitative factor
Experimental design tab: Two-way ANOVA
Multiple comparisons tab: Two-way ANOVA
Summary of multiple comparisons available (two-way)