spc.capability.cpk.simple: Calculate Capability Measures - Cpk

Description Usage Arguments Value

View source: R/spc.capability.cpk.simple.R

Description

Calculate Cpk, a measure that compares the distance between process center and nearest specification limit to process variability. Lower process variability and larger distance between process center and nearest specification limit lead to higher values, which are generally considered better.

Usage

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spc.capability.cpk.simple(
  lower.specification,
  upper.specification,
  process.variability,
  process.center,
  n.sigma = 6
)

Arguments

lower.specification

Lower specification limit (if applicable)

upper.specification

Upper specification limit (if applicable)

process.variability

Estimate of process variability, expressed as variance

process.center

Estimate of process center

n.sigma

The number of standard deviations to use in the denominator of the calculation. 6 is recommended, but 5.15 has also been historically used by Automotive Industry Action Group (AIAG).

Value

A scalar with computed Cp.


burrm/lolcat documentation built on Oct. 13, 2021, 11:35 p.m.