Si r = 0.8, la proportion de la variabilité de Y qui n'est pas expliquée par X est

Question

a) 0,20

b) 0,80

c) 0,64

d) 0,36

Answer 1

If you know r=0.8, then calculate r². The R-square value tells you how much variation is explained by your model. So if r=0.8, R-square= 0.64,which means that your model explains 64% of variation within the data.