p Chart in Excel

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The p chart is used when the sample size varies: the total number of circuit boards, meals, or bills delivered varies from one sampling period to the next.

Here is a sample of a p chart created using the QI Macros SPC Software for Excel.The stair step or skyline control limits are the result of the varying sample sizes.

p chart data looks like this:

p chart video

p chart format options in the QI Macros

p chart template in Excel

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