Methods and formulas for capability statistics in Binomial Capability Analysis

Average P

Notation

TermDescription
DtotSum of all the defectives
NtotSum of all the sample sizes

%Defective

Notation

TermDescription
Average PThe proportion of items in your process that are defective

PPM Defective

Notation

TermDescription
Average PThe proportion of items in your process that are defective

Process Z

Process Z is calculated as the value on a standard normal distribution N (0,1), such that the area to the right of the value is the Average P.

Notation

TermDescription
Inverse cumulative distribution function (CDF) of a standard normal distribution
Average PThe proportion of items in your process that are defective
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