inverse function of zscore?

Hi all,

is there any inverse function of zscore?

Answer 1

[li haitao]

Give you an exmaple:

>> load('lawdata.mat')
>> [Z,gpamean,gpastdev] = zscore(gpa);
>> gpa2=Z*gpastdev+gpamean;
>> gpa2-gpa

ans =

       0
       0
       0
       0
       0
       0
       0
       0
       0
       0
       0
       0
       0
       0
       0
So gpa2 is the same with gpa.

[pietro]

Thanks to all, I supposed there was an embedded function I wanted to use to improve the code readability.

Answer 2

[Star Strider]

To get x from Z knowing the mean (mu) and standard deviation (s):

x = Z*s + mu