Question

Based on the data shown below, calculate the regression line (each value to two decimal places)

y =  x +

x	y
5	17.9
6	24.4
7	27
8	28.9
9	32.5
10	32.5
11	36.5
12	38.2
13	42.1

Answer 1

x	y	xy	x2	y2
5	17.9	89.5	25	320.41
6	24.4	146.4	36	595.36
7	27	189	49	729
8	28.9	231.2	64	835.21
9	32.5	292.5	81	1056.25
10	32.5	325	100	1056.25
11	36.5	401.5	121	1332.25
12	38.2	458.4	144	1459.24
13	42.1	547.3	169	1772.41
∑Xi=81	∑Yi=280	∑xiyi=2680.8	∑xi^2=789	∑Yi^2=9156.38