Answered: OPS Income Name (X) (Y) Zim 35 9 Woody…

OPS Income Name (X) (Y) Zim 35 9 Woody 67 17 Sullivan 50 36 Darth Vader 83 63 Homer Simpson 45 105 Mean Variance St.Dev. OPS 56 362 19 Income 46 1520 39

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

The following tables show five people’s occupational prestige scores (OPS) and their income (in thousand dollars), and the descriptive statistics of the two variables. You have also fitted a simple linear regression model to the data, as the scatter plot shows.

Calculate the Pearson’s correlation coefficient (r) with TWO decimal digits.

A. -0.06

B. 0.06

C. -0.11

D. 0.11

E. -0.38

F. 0.38

G. -0.76

H. 0.76

OPS
Income
Name
(X)
(Y)
Zim
35
9
Woody
67
17
Sullivan
50
36
Darth Vader
83
63
Homer Simpson
45
105
Mean
Variance
St.Dev.
OPS
56
362
19
Income
46
1520
39

Definition Definition Statistical measure used to assess the strength and direction of relationships between two variables. Correlation coefficients range between -1 and 1. A coefficient value of 0 indicates that there is no relationship between the variables, whereas a -1 or 1 indicates that there is a perfect negative or positive correlation.

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