Standardization (Geron Ch 2, morie.fn grstd)

z = (x - mean)/sd per column with ddof = 0 by default; a constant column raises.

Usage

morie_geron_standardization_grstd(X, ddof = 0)

Arguments

X

Vector or matrix.

ddof

Denominator correction in [0, m-1].

Value

List with scaled, mean, scale.

Examples

V <- c(1, 2, 3, 4, 5, 6, 7, 8)
morie_geron_standardization_grstd(V)
#> $scaled
#> [1] -1.5275252 -1.0910895 -0.6546537 -0.2182179  0.2182179  0.6546537  1.0910895
#> [8]  1.5275252
#> 
#> $mean
#> [1] 4.5
#> 
#> $scale
#> [1] 2.291288
#> 
#> $estimate
#> [1] -1.5275252 -1.0910895 -0.6546537 -0.2182179  0.2182179  0.6546537  1.0910895
#> [8]  1.5275252
#> 
#> $n
#> [1] 8
#>