ellip: confidence ellipsoid

In MSQC: Multivariate Statistical Quality Control

confidence ellipsoid

Description

It makes a confidence ellipsoid.

Usage

ellip(type = c("chi", "t2"), x, Xmv, S, phase=1, alpha=0.01, method="sw", colm,...)

Arguments

type	is the type of ellipsoid to constructs (chi or t2)
x	matrix containing the quality characteristics.
Xmv	is the mean vector
S	is the sample covariance matrix
phase	is the Phase (1 or 2) and will determine the UCL to use. Only the values phase = 1 or 2 are allowed.
alpha	is the significance level (0.01 for default)
method	is the method to compute S.
colm	is the number of samples (m), which is only used in Hotelling control chart (Phase II)
...	other parameters

Author(s)

Edgar Santos-Fernandez

Examples

data(dowel1)
ellip(type = "chi", dowel1, alpha = 0.01)

MSQC documentation built on May 1, 2022, 5:07 p.m.