Quality Control (QC) Calculator & Simulator

Data Entry Information

Monthly Mean, Standard Deviation & CV

Enter up to 40 measurements, then click the buttons to obtain the calculated values for the mean, standard deviation, and CV. Blank entry boxes are not included in the calculations but zeros are.

1-10
11-20
21-30
31-40



Cumulative/Lot-to-Date Calculator

To calculate cumulative control limits, enter the previous month's figures for n, sum of x, and sum of x squared, then push the "Total" button. To calculate monthly control limits, just push the "Total" button and only the monthly figures will be used.

Previous month's data
This month's data
Totals



Control Chart Settings

Control Chart
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