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Unformatted text preview: Research Methods Exam 4 Study Guide- how to interpret data from tables and graphs- main effects and/or interactions- if get data in a table, always plot it so easier to make sense of data that you can visualize- don’t use term parameter – they are factors- main effect is when there is a change of a1 and a2 (increase)- interaction – cant be parallel, but don’t have to necessarily cross o if not parallel, interaction the rule- to find main effect, use row and column means- always possible to manipulate variables of between subjects design o always less statistical power o have to run more tests- within subjects o more power because each person acting as his or her own control so cancel out variability o more time efficient because have to run fewer people o drawback – always have to be concerned with possible confounds in the way you test (order and sequence effects), and not always possible to use one Chapter 12- factorial design – research design that involves all combinations of at least two values of two or more independent variables- main effect – in a factorial experiment, the effect of one independent variable,...
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This note was uploaded on 04/17/2011 for the course PSY 0035 taught by Professor Barbkucinski during the Fall '08 term at Pittsburgh.
- Fall '08