Sample Size Calculation, Several Means, ANOVA, 2-Way

Sample size calculation for 2-way ANOVA with option for charts of sample size vs. RMSSE, sample size vs. alpha, and sample size vs. power.

General

Power Goal. Power goal to use in the sample size calculation (acceptable range 0.65 to 0.999).

Number of Row Levels. Number of levels of the row effect (acceptable range 2 to 1000).

Number of Column Levels. Number of levels of the column effect (acceptable range 2 to 1000).

Row RMSSE. Row effect root mean square standardized effect.

Column RMSSE. Column effect root mean square standardized effect.

Interaction RMSSE. Row and column interaction effect root mean square standardized effect.

Alpha Level. Alpha level (Type I error rate for the overall F test) (acceptable range 0.0001 to 0.25).

Detail of computed results reported. Output level of detail selection:

Sample Size Calculation produces Sample Size Calculation Spreadsheet;

Smpl Size Calc plus Charts option produces, in addition, Sample Size vs. RMSSE chart, Sample Size vs. Alpha Level chart, and Sample Size vs. Power chart.

Chart Parameters

Number of Steps. (For charts only). Number of individual steps for which to calculate sample size between the starting and ending parameter values for Sample Size Charts (Min 4, Max 100).

Starting Power. (For charts only). Initial power value for calculation of Sample Size vs. Power chart (acceptable range 0.05 to 0.99).

Ending Power. (For charts only). Final power value for calculation of Sample Size vs. Power chart (acceptable range 0.10 to 0.999).

Starting RMSSE. (For charts only). Initial RMS standardized effect size for calculation of Sample Size vs. RMSSE chart (acceptable range 0.01 to 9).

Ending RMSSE. (For charts only). Final RMS standardized effect size for calculation of Sample Size vs. RMSSE chart (acceptable range 0.02 to 10).

Starting Alpha Level. (For charts only). Initial alpha level for calculation of Sample Size vs. Alpha Level chart (acceptable range 0.0001 to 0.2499).

Ending Alpha Level. (For charts only). Final alpha level for calculation of Sample Size vs. Alpha Level chart (acceptable range 0.0002 to 0.25).