WAnova

Provides the functions to perform a Welch's one-way Anova with fixed effects based on summary statistics (sample size, means, standard deviation) and the Games-Howell post hoc test for multiple comparisons and provides the effect size estimator adjusted omega squared. In addition sample size estimation can be computed based on Levy's method, and a Monte Carlo simulation is included to bootstrap residual normality and homoscedasticity Welch, B. L. (1951) Kirk, R. E. (1996) Carroll, R. M., & Nordholm, L. A. (1975) Albers, C., & Lakens, D. (2018) Games, P. A., & Howell, J. F. (1976) Levy, K. J. (1978a) Show-Li, J., & Gwowen, S. (2014).

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