y 637 109x 20x values have mean of 9693 20y values have a

y= -6.37 + 1.09x, 20x values have mean of 96.93 , 20y values have a mean of 99.05.what is the best predicted I for the first twin if the second has an IQ of 92.

Solution

for x = 96.93 and y = 99.05

x = 96.93 / 20 = 4.8465

y = 99.05 / 20 = 4.9525

Y = -6.37 + 1.09 * 4.8465

Y = -1.087