The Student Room Group
Reply 1
MODE : STAT
2 A+BX
ENTER DATA
SHIFT 1 (STAT)
7 REG
and 3 r (correlation coefficient)
Reply 2
Thanksss this helped alot!
how about if your given the Ex, Ey, Ex^2 , Ey^2, Exy and n

instead of the x and y values. How do you find the PMCC?


Thanks
Original post by craftycocknet
how about if your given the Ex, Ey, Ex^2 , Ey^2, Exy and n

instead of the x and y values. How do you find the PMCC?


Thanks


I think you'd just substitute them into the PMCC formula.
Original post by craftycocknet
how about if your given the Ex, Ey, Ex^2 , Ey^2, Exy and n

instead of the x and y values. How do you find the PMCC?


Thanks


You'd use the formula given in the formula booklet. I've attached it below. r = PMCC value
a_maths_correlation002.png
You can't because you dont know what x or y are. My book says input the values I was given above... and there is a key you press to give you r?
Original post by sivthasan
You'd use the formula given in the formula booklet. I've attached it below. r = PMCC value
a_maths_correlation002.png


X and y values are not given... My book shows me how to do it with a different calculator. I have no teacher BTW! Thanks