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

In burrm/lolcat: Miscellaneous Useful Functions

Calculate Capability Measures - Cpk

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

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 Aug. 15, 2024, 6:16 p.m.