x y 1.0 3.6 2.0 4.1 3.0 3.6 4.0 5.3 5.0 4.4 6.0 6.8 7.0 5.7 8.0 7.8 9.0 6.7 10.0 7.8 y 1 2 3 4 5 6 7 8 9 10 11 x 1 2 3 4 5 6 7 8 9 10 11 0 Figure 1 u v 1.0 7.8 2.0 8.7 3.0 6.8 4.0 5.6 5.0 8.3 6.0 5.2 7.0 4.2 8.0 7.0 9.0 6.1 10.0 3.5 v 1 2 3 4 5 6 7 8 9 10 11 u 1 2 3 4 5 6 7 8 9 10 11 0 Figure 2 w t 1.0 6.9 2.0 9.5 3.0 3.8 4.0 9.0 5.0 5.0 6.0 2.3 7.0 5.9 8.0 10.2 9.0 4.8 10.0 7.6 t 1 2 3 4 5 6 7 8 9 10 11 w 1 2 3 4 5 6 7 8 9 10 11 0 Figure 3 m n 1.0 7.8 2.0 7.1 3.0 8.0 4.0 5.9 5.0 7.4 6.0 4.5 7.0 5.2 8.0 3.7 9.0 4.1 10.0 3.5 n 1 2 3 4 5 6 7 8 9 10 11 m 1 2 3 4 5 6 7 8 9 10 11 0 Figure 4 Answer the following questions about the relationships between pairs of variables and the values of r , the sample correlation coefficient. The same response may be the correct answer for more than one question. 1. For which data set is the sample correlation coefficient r closest to 0? Choose onethe x, y data setthe u, v data setthe w, t data setthe m, n data set 2. Which data set indicates the strongest positive linear relationship between its two variables? Choose onethe x, y data setthe u, v data setthe w, t data setthe m, n data set 3. For which data set is the sample correlation coefficient r equal to 1? Choose onethe x, y data setthe u, v data setthe w, t data setthe m, n data setnone of the data sets 4. For which data set is the sample correlation coefficient r closest to -1? Choose onethe x, y data setthe u, v data setthe w, t data setthe m, n data set

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

x	y
1.0	3.6
2.0	4.1
3.0	3.6
4.0	5.3
5.0	4.4
6.0	6.8
7.0	5.7
8.0	7.8
9.0	6.7
10.0	7.8

Figure 1

u	v
1.0	7.8
2.0	8.7
3.0	6.8
4.0	5.6
5.0	8.3
6.0	5.2
7.0	4.2
8.0	7.0
9.0	6.1
10.0	3.5

Figure 2

w	t
1.0	6.9
2.0	9.5
3.0	3.8
4.0	9.0
5.0	5.0
6.0	2.3
7.0	5.9
8.0	10.2
9.0	4.8
10.0	7.6

Figure 3

m	n
1.0	7.8
2.0	7.1
3.0	8.0
4.0	5.9
5.0	7.4
6.0	4.5
7.0	5.2
8.0	3.7
9.0	4.1
10.0	3.5

Figure 4

Answer the following questions about the relationships between pairs of variables and the values of

, the sample correlation coefficient. The same response may be the correct answer for more than one question.

1. For which data set is the sample correlation coefficient r closest to 0?	Choose onethe x, y data setthe u, v data setthe w, t data setthe m, n data set
2. Which data set indicates the strongest positive linear relationship between its two variables?	Choose onethe x, y data setthe u, v data setthe w, t data setthe m, n data set
3. For which data set is the sample correlation coefficient r equal to 1?	Choose onethe x, y data setthe u, v data setthe w, t data setthe m, n data setnone of the data sets
4. For which data set is the sample correlation coefficient r closest to -1?	Choose onethe x, y data setthe u, v data setthe w, t data setthe m, n data set

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