 McNemar's Test: Sample Size Calculation Results - Quick Tab

Calculating Power

Select the Quick tab of the McNemar's Test: 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 Delta. In the Start Delta box, enter is the starting value of delta used in the N vs. Delta chart.

End Delta. In the End Delta box, enter the final value of delta used in the N vs. Delta chart.

Start Eta. In the Start Eta box, enter the starting value of eta used in the N vs. Eta chart.

End Eta. In the End Eta box, enter the final value of eta used in the N vs. Eta chart.

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

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

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

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

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

Sample Size Charts. Use the buttons under Sample Size Charts to produce charts of N as a function of (required) power, delta, eta, or type I error rate. Note that parameters specified under X-Axis Graphing Parameters control the range of values plotted on the X-axis and the number of steps plotted.

N vs. Delta. Click the N vs. Delta button to produce a plot of N versus delta, the difference in the population of times the proportion occurs on the two measurement occasions.

N vs. Eta. Click the N vs. Eta button to produce a plot of N versus eta, the "nuisance parameter."

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.