PSYC 1032 Study Guide - Final Guide: Analysis Of Variance, F-Test
22 Dec 2016
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= (x - gm)2 dftotal = n 1. N = total number of observations: calculate ssbetween. = n (j - gm)2 do this k times dfbetween = k 1 k = number of groups n = participants in each group j = individual group (i. e. season: sswithin/error. = sstotal - ssbetween dfwithin = k(n 1) n = observations in a group: msbetween/treatment/group, mswithin/error, f. F (dfbetween, dfwithin) dfnumerator = dfbetween (column) dfdenominator = dfwithin (rows) If you are interested in telling the difference between groups: t : critical value of t is based on dfwithin. = average of all n observations: compute marginal averages for a and t. = average of rows and average of columns: compute sstotal, compute ssa, compute sst, compute sscells. = (2n) (a-gm)2 square each before summing them all use all marginal means of a. = (2n) (t-gm)2 square each before summing them all use all marginal means of t.
