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### 8 Cards in this Set

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 Factorial design= 2 or more IV 1 DV examines effects of more than 1 IV, both individually and collectively, on the DV Main effect effect of a single independent variable on the DV while ignoring other IV's Interaction present when the effect of one IV on the DV depends on the level of another IV sir ronald fischer agriculturist created f-ratio to konw interaction of effects b/c crop yeild impacted by combination of variables 2 way factorial design 2 IVs Between subjects variables diferent participants assigned to each cell calculate mean score for each cell calculate marginal means Null no difference among levels of IV A no difference among levels of IV B no interaction between A and B 8 possible outcomes 1.no sig.main effects, interaction not sign 2.sig main effect for variable A only 3.sig main effect for variable B only 4.sign main effct for variables A & B only 5.interaction is sign, main effects are not 6.sig main effect for variable A and interaction is sig 7.sig main effect for variable B and interaction is sig 8.both main effects and interaction are significant 7 Null hypothesis & 7 tests 3 for main effects of IVs, A,B,C 3 two-way interactions; AxB, AxC, BxC 1 three-way interaction, AxBxC