PSY522_What_test_week3 - Difference or Association...

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Difference or Association ? # of independent/ predictor variables # of dependent/ criterion variables Any variables controlled? Formula for DF Example/ Notes Single sample t test Difference 1 1 No df = N-1 Difference of a one sample mean with a known population mean. Dependent means t test Difference 1 1 No df = N-1 Independen t means t test Difference 1 1 no df = N-1 Assumes that two samples have equal variance. F test may be used to prove this assumptio n. ANOVA Differences
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Unformatted text preview: or effects 1 (3 or more levels) 1 No Df = n-k Post hoc tests are available to use that enable you to make compariso ns between every pair of samples from the experimen t. Factorial ANOVA Differences or effects 2+ (with 2 or more levels) 1 yes Df=N-1 The factorial ANOVA should not have any between-factor effects. The higher the variation within the sample the better the results of the factorial ANOVA....
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