This function calculate the auxiliary statistics necessary to build the control chart reference lines.

stats(datum, m, n, p)

Arguments

datum

The data set. Should be an array.

m

The number of sub groups generated previously in data.1.

n

The size of each sub group used previously in data.1.

p

The dimension used previously in function data.1.

Value

Return the values of the three statistics: a vector with the mean of the means, the mean of the estimated variance-covariance matrixes and a matrix with the means of each sample.

Details

To use this function it is necessary to have the information about the data.1.

Examples

mu <- c(5.682, 88.22) Sigma <- symMatrix(c(3.770, -5.495, 13.53), 2) #Example with individual observations datum <- data.1(50, 1, mu, Sigma) estat <- stats(datum, 50, 1, 2) #Example with sub-group observations datum <- data.1(20, 10, mu, Sigma) estat <- stats(datum, 20, 10, 2)