Maths Problem - OcUK Rule!

[badgermonkey]

Oke, so my mate (it's not me, you all know I'm doing a computer degree, not A-Level maths ) needs a bit of help answering a maths question.

The letter u is being used to represent mew (the mean) and the o- is used to represent the standard deviation. So sorry about how odd it looks

Anyway:

Suppose that a list of data-points X1, X2,....Xn has mean u (mew) and standard deviation o-. Prove that the set of data points Y1, Y2,...Yn is given by calculating:

Yi = ( Xi - u ) / o- for each i from l



to n, has mean 0 and standard deviation 1.


u = mean
o- = standard deviation

Can anyone help? Unfortunately I did mechanics not stats in 6th form