SixSigma (version 0.6.3)

ss.cc.getd2: Functions to find out constants of the relative range distribution.

Description

These functions compute the constants d2, d3 and c4 to get estimators of the standard deviation to set control limits.

Usage

ss.cc.getd2(n = NA)
ss.cc.getd3(n = NA)
ss.cc.getc4(n = NA)

Arguments

n

Sample size

Value

• A numeric value for the constant.

References

Cano, Emilio L., Moguerza, Javier M. and Redchuk, Andres. 2012. Six Sigma with {R}. Statistical Engineering for Process Improvement, Use R!, vol. 36. Springer, New York. http://www.springer.com/statistics/book/978-1-4614-3651-5.

Examples

ss.cc.getd2(20)
ss.cc.getd3(20)
ss.cc.getc4(20)