Converts data to standard normal (mean = 0; SD = 1) - i.e., z-scores.
Any data object (especially useful for multiple columns of a data.frame).
Takes the data (by columns if necessary) and subtracts out the mean and then divides by the standard deviation. The result is a standard normal z score.
A numeric or matrix containing standardized data (i.e., z scores)
The result is a matrix. One may wish to convert to data.frame or use as.data.frame(Make.Z(x))
Thomas D. Fletcher [email protected]
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