Posted by **Kassie** on Sunday, March 21, 2010 at 6:43pm.

If Y' = a +bX for all i and a=the mean of Y - b*the mean of X, prove that SigmaY' = SigmaY (subscript i).

Hint: replace a with mean of Y minus b*mean of X and take the sum of both sides of the equation--that is, SigmaY'(subscript i)=Sigma(mean of Y-b*Mean of X + bX(subscript i).

I just dont even know where to begin with this problem. Please Help!!

## Answer this Question

## Related Questions

- Math - A set of data has a mean of 25 and an outlier of 5. You find the mean ...
- statistics - If μ =10 and σ =4 for a distribution of sample mean, ...
- statistics - basically i'm at the begining of the text book doing summer work it...
- math - Prove the identity: cos^4(x)-sin^4(x)=1-2sin^2(x).with explanation im ...
- Statistics - With a known population mean of 100, and a known standard of error...
- Statistics - The mean of a distribution of 1000 individuals' blood pressure is ...
- Statistics - With a known population mean of 100, and a known standard error of ...
- math - You are given the following: there are 27 pieces of data mean is 60 ...
- algebra help mrs. Sue - Mrs.Sue my homework from yesterday i had wrong ...
- mrs. sue algebra help - Mrs.Sue my homework from yesterday i had wrong ...