spc.capability.cpU.simple: Calculate Capability Measures - CpU

Description Usage Arguments Value

Description

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

Usage

1
2
3
4
5
6
spc.capability.cpU.simple(
  upper.specification,
  process.center,
  process.variability,
  n.sigma = 6
)

Arguments

upper.specification

Upper specification limit (if applicable)

process.center

Estimate of process center

process.variability

Estimate of process variability, expressed as variance

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 CpU.


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