Methods and formulas for benchmark Zs for potential capability in Normal Capability Analysis for Multiple Variables

Z.LSL, Z.USL, and Z.Bench for potential (within) capability

Benchmark Z statistics for potential capability are calculated by finding the Z value using the standard normal (0,1) distribution for the corresponding statistics.

where:

Notation

TermDescription
Φ (X) Cumulative distribution function (CDF) of a standard normal distribution
Φ-1 (X)Inverse CDF of a standard normal distribution
Within-subgroup standard deviation
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