Answered: If you plot all the data together in a…

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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(a) If you plot all the data together in a scatterplot in excel, you will see there is an outlier. (You might also be able to spot the outlier by just looking at the data set in excel.) Investigate the outlier and determine what is an appropriate course of action for it. Explain (briefly!)

(b) Create a scatterplot using two different colors/symbols, one for males and one for females. (also known as a scatterplot with a categorical variable).

(c) Pick one of the gender groups and describe the scatterplot, find the correlation coefficient r, and the equation of the least squares regression line.

Shoe size Height | Gender | Shoe size | Height | Gender
6.5
66.0
F
13.0
77
M
9.0
68.0
F
11.5
72
8.5
64.5
8.5
59
F
8.5
65.0
F
5.0
62
F
10.5
70.0
10.0
72
M
7.0
64.0
F
6.5
66
F
9.5
70.0
F
7.5
64
F
9.0
71.0
F
8.5
67
M
13.0
72.0
10.5
73
7.5
64.0
F
8.5
69
F
10.5
74.5
10.5
72
M
8.5
67.0
F
11.0
70
9.0
13.0
12.0
71.0
69
M
10.5
71.0
M
70
M

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