Now, suppose Michael Phelps, the great swimmer, decides to go back to school to be a nurse and he just so happens to take online statistics at PCC. Michael adds himself to the data set: he’s 6’4” tall and has a wingspan of 6’7”. Make a scatterplot of the data (leave out point from the last questions and add in Michael). Redo the calculations of r, r2, and the regression line. (Call this Model #3) Compare the statistics for Model #2 and Model #3: did any of the calculations change? Was the change small or significant? Explain how the addition of Michael Phelps to the class data affected the calculations.

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Question
  1. Now, suppose Michael Phelps, the great swimmer, decides to go back to school to be a nurse and he just so happens to take online statistics at PCC. Michael adds himself to the data set: he’s 6’4” tall and has a wingspan of 6’7”.
    1. Make a scatterplot of the data (leave out point from the last questions and add in Michael).
    2. Redo the calculations of r, r2, and the regression line. (Call this Model #3)
    3. Compare the statistics for Model #2 and Model #3: did any of the calculations change? Was the change small or significant? Explain how the addition of Michael Phelps to the class data affected the calculations.
63
A
D
66
67
71
67
79
82
65
65
68
68
68
66
64
64
65
63
75
73
70
66
72
71
73
76
B.
Transcribed Image Text:63 A D 66 67 71 67 79 82 65 65 68 68 68 66 64 64 65 63 75 73 70 66 72 71 73 76 B.
A
B
D
E
F
G
Height
Wingspan
69
65
64
63
67
66
wrong
63
57
0.7206166946
1.160201485
63
60
19.83808541
-12.18652957
66
65
70
68
height = y
65
64
wingspan = x
66
65
66
61
67
67
75
76
67
65
66
65
69
71
72
67
66
66
64
60
65
64
66
65
59
55
62
63
Transcribed Image Text:A B D E F G Height Wingspan 69 65 64 63 67 66 wrong 63 57 0.7206166946 1.160201485 63 60 19.83808541 -12.18652957 66 65 70 68 height = y 65 64 wingspan = x 66 65 66 61 67 67 75 76 67 65 66 65 69 71 72 67 66 66 64 60 65 64 66 65 59 55 62 63
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