1-Way ANOVA: Sample Size Calculation Results - Quick Tab

Calculating Required Sample Size

Select the Quick tab of the 1-Way ANOVA: Sample Size Calculation Results dialog box to access options to interactively view the results of sample size calculations and generate plots of required sample size as a function of quantities that affect sample size in practice.  

X-Axis Graphing Parameters. The entries in the boxes under X-Axis Graphing Parameters establish the start value, end value, and number of steps on the X-axis for the graphs specified under Sample Size Charts.

Start Power. In the Start Power box, enter the starting value of power goal used in the N vs. Power  sample size chart.

End Power. In the End Power box, enter the final value of power goal used in the N vs. Power  sample size chart.

Start RMSSE. In the Start RMSSE box, enter the starting value of RMSSE used in the N vs. RMSSE sample size chart.

End RMSSE. In the End RMSSE box, enter the final value of RMSSE used in the N vs. RMSSE sample size chart.

Start Alpha. In the Start Alpha box, enter the starting value of α used in the N vs. Alpha sample size chart.

End Alpha. In the End Alpha box, enter the final value of α used in the N vs. Alpha sample size chart.

No. of Steps. In the No. of Steps box, enter the number of steps, or intervals, plotted on the X-axis in the power charts specified in the Sample Size Charts box.

Sample Size Charts. Use the buttons under Sample Size Charts to produce charts of required N as a function of power goal, standardized effect size, or type I error rate. Note that parameters given in the X-Axis Graphing Parameters group box control the range of values plotted on the X-axis and the number of steps plotted.

N vs. RMSSE. Click the N vs. RMSSE button to produce a plot of N versus root mean square standardized effect size.

N vs. Alpha. Click the N vs. Alpha button to produce a plot of N vs. type I error rate.

N vs. Power. Click the N vs. Power button to produce a plot of N versus power goal.