About how many participants are needed in each group for 80% power in each of the following planned studies, using the analysis of variance with p

Extracted text: About how many participants are needed in each group for 80% power in each of the following planned studies, using the analysis of variance with p < 0.05?="" use="" the="" accompanying="" table="" of="" approximate="" numbers="" of="" participants="" needed.="" predicted="" effect="" size="" number="" of="" groups="" (а)="" small="" (b)="" medium="" 3="" (c)="" small="" 4="" (d)="" large="">


Extracted text: Approximate Number of Participants Needed in Each Group (Assuming Equal Sample Sizes) for 80% Power for the One-Way Analysis of Variance Testing Hypotheses at the 0.05 Significance Level Effect Size Small Medium Large (R2 = .14) (R² = .01) (R2 = .06) 322 Three groups (dbutweoen = 2) Four groups (dfaatwoen = 3) Five groups (dfeatwen 52 21 274 45 18 4) 240 39 16