stat.bwss: Between and Within Group Sum of Squares Calculation

In gnyamundanda/sma: Statistical Microarray Analysis

Description

This function computes the between and within group sum of squares for each row of a matrix which may have NAs.

Usage

stat.bwss(x, cl)

Arguments

x	a matrix, NAs allowed. In the microarray context, the rows of X could correspond to genes and the columns to different hybridizations.
cl	column labels, must be consecutive integers.

Value

List containing the following components

wn	matrix with class sizes for each row of X;
BW	vector of BSS/WSS for each row of X;
BSS	between group sum of squares for each row of X;
WSS	within group sum of squares for each row of X;
TSS	total sum of squares for each row of X;
tvar	variance for each row of X.

Author(s)

Sandrine Dudoit, [e-mail]
Jane Fridlyand, [e-mail]

References

S. Dudoit, J. Fridlyand, and T. P. Speed. Comparison of Discrimination Methods for the Classification of Tumors Using Gene Expression Data. June 2000. (Statistics, UC Berkeley, Tech Report \# 576).

See Also

var.na, var, apply.

gnyamundanda/sma documentation built on May 3, 2019, 5:17 p.m.