- #1

retspool

- 36

- 0

Linear models is the topic

And i believe my professor wrote this n*Sum(XiYi) - Sum(XiYi) = Sum(Xi - Xbar)(Yi - Ybar)

i was hoping if some one could tell me if this is true of if it is my bad in typing down.

If it is true then can some one please tell me how?

I've attached an image i'd appreciate it if someone could explain to me the last 3 steps.

Thanks

And i believe my professor wrote this n*Sum(XiYi) - Sum(XiYi) = Sum(Xi - Xbar)(Yi - Ybar)

i was hoping if some one could tell me if this is true of if it is my bad in typing down.

If it is true then can some one please tell me how?

I've attached an image i'd appreciate it if someone could explain to me the last 3 steps.

Thanks