PSYC 300B Chapter Notes - Chapter 10: Statistical Hypothesis Testing
24 Mar 2018
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The graphic gure displays these cell means, not values for x (ii) you need at least 4 cells means to create a gure or table. An apa-type graphic gure is required only if the interaction in the study is statistically signi cant (iii) interpret main effects using the marginal means. If marginal means for a speci c factor are not statistically different, then the main effect for that factor is not signi cant (i. e. the levels of that factor are not differentially in uencing the participant"s behaviours) Only when means are exactly = can we make a sure conclusion. Interaction (a1b1 + a2b2) 2 = (a1b1 + a2b2) 2 (ii) column main effect look for . A difference between the column marginal means. Angle of lines relative to the x-axis. If the column marginals for a1 - a2 0, it is possible that the main effect is signi cant.
