Use the given data to find the equation of the regression li

Use the given data to find the equation of the regression line. X (round to two decimal place as needed.)

Solution

FIRST WE HAVE TO FIND THE X*Y AND XX THAT IS X^2

Find the sum of every column:

X=10 , Y=10 , XY=28 , X2=24

Use the following equations to find a and b:

a=YX2XXY / nX2(X)2 = 102410285241022

b=XYXY / nX2(X)2=5281010524(10)22

Substitute a and b in regression equation formula

y  = a + bx

Y = 2 + 2x

X	Y	XY	XX
3	3	9	9
2	2	4	4
3	5	15	9
1	-1	-1	1
1	1	1	1