The following data represent the heights and weights of various baseball players. (in inches/ pounds)
Player Height, x Weight, y Player Height, x Weight, y
Nate 72 197 Greg 70 195
Derek 71 201 Randy 77 240
Mark 73 192 Josh 71 193
Jon 74 209 Pat 74 203
(a) Compute the least-square regression line. Y=(.....)x- (......)(Do not round until the final answer, then round to three decimal places as needed)
(b) Remove the value corresponding to Randy and compute the least square regression line the correlation coefficient.
(c) Do you thing that Randy is an influential observation.