MSQC (version 1.1.0)

ellip: 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

Examples

# NOT RUN {
data(dowel1)
ellip(type = "chi", dowel1, alpha = 0.01)
# }