Edexcel S1 Regression

when a question ask you to work out b, where in the formula book let
b=Sxy/Sxx

some time the question can have any variable like p t h q etc...
let say a question has Spp, Spt and Stt

we would obviously do b= Spt/S...

how doe we know what goes in the numerator which one goes in there???

i now it a funny question :colondollar:

Reply 1

falcon pluse

Original post by TheGoldenRatio

when a question ask you to work out b, where in the formula book let
b=Sxy/Sxx

some time the question can have any variable like p t h q etc...
let say a question has Spp, Spt and Stt

we would obviously do b= Spt/S...

how doe we know what goes in the numerator which one goes in there???

i now it a funny question :colondollar:

the one with the two different letters as subscripts always and numerators. One with same subscript always denominator

Reply 2

falcon pluse

Original post by TheGoldenRatio

when a question ask you to work out b, where in the formula book let
b=Sxy/Sxx

some time the question can have any variable like p t h q etc...
let say a question has Spp, Spt and Stt

we would obviously do b= Spt/S...

how doe we know what goes in the numerator which one goes in there???

i now it a funny question :colondollar:

oops miss read the spp goes on denominator . take x=p and t=y