Psych Stats II Exam 2

Study set for hell part 2

Assumption of independence

data points are separate and independent, not always true but must be corrected for an ANOVA test

Things that move power

sample size, true effect, standard error, alpha value

Random effects

confounds that stop us from testing what we want to test

fixed effects

what we’re actually trying to test

how is n² different from partial n²

the latter takes out variability for other effects

Sphericity assumption

the difference between 3 or more levels are the same distance apart

between subjects error (conceptually)

looks at participant variability in each group

within subjects error (conceptually)

looks at participant variability across the different conditions in their groups

small effect size for partial n²

0.01

medium effect size for partial n²

0.06

large effect size for partial n²

0.14

small effect size for cohen’s f

0.1

medium effect size for cohen’s f

0.25

large effect size for cohen’s f

0.4