Question

A population that has u=80 and Q=8. if transformed into zscores it will have a mean of ?? and sd of ??

Answer 1

\[\mu=80 and \sigma8\]

Answer 2

z scores have a mean of 0, and st. dev of 1

Answer 3

thats why they are called 'standard'

Answer 4

Does that mean this answer is standard no matter what?

Answer 5

we are changing the normal random variable X , to the standardized normal random variable Z. it is standardized because the population mean is 0 and st. dev is 1. It is *always* 0 and 1.

Answer 6

Okay! I asked because I saw the answer somewhere but I wasn't sure how they got it.