Question

Stats

Answer 1

@jim_thompson5910

Answer 2

The point is (5,20)

so x = 5 and y = 20

Answer 3

when x = 5, what is y-hat?

Answer 4

how do i figure that out?

Answer 5

do you see the y-hat equation given?

Answer 6

it's the regression line equation

Answer 7

oh ok

Answer 8

y-hat estimates the actual y values

Answer 9

55

Answer 10

now we go here

http://stattrek.com/regression/residual-analysis.aspx

and we see that...

\[\LARGE e = y - \hat{y}\]

Answer 11

so you just take the observed y value and subtract off the estimated y value

Answer 12

will that give me r?

Answer 13

-35

Answer 14

no, it will give you the residual e

Answer 15

e = error

Answer 16

oh ok

Answer 17

then what

Answer 18

yeah it's annoying since residual starts with r

Answer 19

but r is taken (it's the correlation coefficient)

Answer 20

oh thats right, can i pm u?

Answer 21

sure