Full data set The following data represent the heights and weights of various baseball players Height, x (inches) Player Nate Derek Mark Weight, y (pounds) Player Greg Randy Josh Pat Height, x (inches) Weight, y (pounds) 73 207 70 183 72 73 70 198 222 77 197 74 208 Jon 193 71 202 (a) Compute the least-squares regression line. y 4.5x- 125 (Do not round until the final answer. Then round to three decimal places as needed.) Compute the correlation coefficient. r0.9050 (Do not round until the final answer. Then round to four decimal places as needed.) (b) Remove the value corresponding to Randy and recompute the least-squares regression line. - (Do not round until the final answer. Then round to three decimal places as needed.) Remove the value corresponding to Randy and recompute the correlation coefficient. r= (Do not round until the final answer. Then round to four decimal places as needed.) (c) Do you think that Randy is an influential observation? Yes O No

Question
Full data set
The following data represent the heights and weights of various
baseball players
Height, x (inches)
Player
Nate
Derek
Mark
Weight, y (pounds)
Player
Greg
Randy
Josh
Pat
Height, x (inches)
Weight, y (pounds)
73
207
70
183
72
73
70
198
222
77
197
74
208
Jon
193
71
202
(a) Compute the least-squares regression line.
y 4.5x-
125
(Do not round until the final answer. Then round to three decimal places as needed.)
Compute the correlation coefficient.
r0.9050
(Do not round until the final answer. Then round to four decimal places as needed.)
(b) Remove the value corresponding to Randy and recompute the least-squares regression line.
-
(Do not round until the final answer. Then round to three decimal places as needed.)
Remove the value corresponding to Randy and recompute the correlation coefficient.
r=
(Do not round until the final answer. Then round to four decimal places as needed.)
(c) Do you think that Randy is an influential observation?
Yes
O No

Image Transcription

Full data set The following data represent the heights and weights of various baseball players Height, x (inches) Player Nate Derek Mark Weight, y (pounds) Player Greg Randy Josh Pat Height, x (inches) Weight, y (pounds) 73 207 70 183 72 73 70 198 222 77 197 74 208 Jon 193 71 202 (a) Compute the least-squares regression line. y 4.5x- 125 (Do not round until the final answer. Then round to three decimal places as needed.) Compute the correlation coefficient. r0.9050 (Do not round until the final answer. Then round to four decimal places as needed.) (b) Remove the value corresponding to Randy and recompute the least-squares regression line. - (Do not round until the final answer. Then round to three decimal places as needed.) Remove the value corresponding to Randy and recompute the correlation coefficient. r= (Do not round until the final answer. Then round to four decimal places as needed.) (c) Do you think that Randy is an influential observation? Yes O No

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