Hey guys I have a quick question on my hw, I have found everything needed except the "unusual scores". this is the direction given:
Determine which of the grades, if any, are "unusual" in the sense that their corresponding z-score is < -2.0 or > +2.0. A z-score is computed as:
I know what the x bar and the s is, but I am unsure of what the first x is pertaining to. Can anyone give me a few tips?
Thanks