A randomsample of 11 students produced the following data, where xis the hours spent per month playing video games, and yis the first-semester grade (out of a maximum of 80 points). The data are presented below in the table of values.

x	y
16	69
17	66
17	56
20	46
22	68
23	66
25	67
27	42
30	60
31	36
35	39