Question

Find the regression equation, letting the first variable be the independent variable x.
Round to 3 places if necessary.

Chest size	30	29	32	34	44	50	32	35
Weight	205	124	217	352	286	232	154	265

=

+ x

Answer 1

x	y	xy	x2	y2
30	205	6150	900	42025
29	124	3596	841	15376
32	217	6944	1024	47089
34	352	11968	1156	123904
44	286	12584	1936	81796
50	232	11600	2500	53824
32	154	4928	1024	23716
35	265	9275	1225	70225
∑Xi=286	∑Yi=1835	∑xiyi=67045	∑xi^2=10606	∑Yi^2=457955