Figure A1.
The central and noncentral distributions panel has a horizontal axis from 0 to 0.60, marked at 0.1 intervals. The vertical axis ranges from 0 to 10, marked at intervals of 2. The solid curve rises from near 0.10, peaks near 0.19 above 10, and returns near 0.32. The dashed curve rises from near 0.40, peaks near 0.50 above 10, and returns near 0.60. A vertical marker is labelled critical R squared equals 0.250922. Beta appears below the solid curve at 0.25. Alpha appears below the solid curve, right of the marker, from 0.25 to 0.30. The test family is Exact. The statistical test is Linear multiple regression: Random model. The power analysis type is Post hoc: Compute achieved power, given alpha, sample size, and effect size. The input parameters are Tails, One; H 1 rho squared, 0.49; H 0 rho squared, 0.18; alpha err prob, 0.05; total sample size, 396; and number of predictors, 6. The output parameters are lower critical R squared, 0.2509219; upper critical R squared, 0.2509219; and power 1 minus beta err prob, 1.0000000.Post hoc power analysis