PSYC3010 Study Guide - Final Guide: User Friendly, Multicollinearity, Analysis Of Covariance
Document Summary
One-way designs 1 iv with 2 levels, 1 dv, analysed with t-test or one-way anova. Factorial designs can combine 2 one-way experiments using a factorial design, has at least 2 factors (ivs) each with at least 2 levels, then the 2 ivs can be examined simultaneously (or crossed) One-way anova group means compared to each other and to the grand mean, if they are different then there is an effect of the iv. Grand mean the mean of all observations, not as important for inferential purposes but forms part of the structural model of anova. Marginal means a significant main effect tells us the marginal means are different, but not exactly where they are different. Cell means the effect of one factor at one level of the other factor is called a simple effect, when the effect of one factor is conditional upon the levels of the other factor we have an interaction. Simple effects used to interpret an interaction.
