As a measure of productivity, a cell phone carrier records the number of customers each of its retail employees activates weekly. An activation is defined as either a new customer signing a cell phone contract or an existing customer renewing a contract. The accompanying table shows the number of weekly activations for eight randomly selected employees along with their job-satisfaction levels rated on a scale of 1-10(10=mostsatisfied). Complete parts a through c. LOADING...Click the icon to view the data.a. Calculate the sample covariance. sx,y=(Type an integer or decimal rounded to three decimal places as needed.) b. Calculate the sample correlation coefficient.rxy=(Type an integer or decimal rounded to three decimal places as needed.) c. Describe the relationship between x and y. There is a strong positive linearrelationship between these two variables. As activations increase, satisfaction tends to increase. Activations Satisfaction 34.6 8.426.6 8.039.2 8.337.5 9.517.7 6.327.2 6.831.7 8.125.0 7.9

a. Let x be the activations, and y be the satisfactions. The sums are, x y x2 y2 xy 34.6…

Answered: As a measure of productivity, a cell…

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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As a measure of productivity, a cell phone carrier records the number of customers each of its retail employees activates weekly. An activation is defined as either a new customer signing a cell phone contract or an existing customer renewing a contract. The accompanying table shows the number of weekly activations for eight randomly selected employees along with their job-satisfaction levels rated on a scale of 1-10

(10=most

satisfied). Complete parts a through c.

Click the icon to view the data.

a. Calculate the sample covariance.

sx,y=

(Type an integer or decimal rounded to three decimal places as needed.)

b. Calculate the sample correlation coefficient.

rxy=

(Type an integer or decimal rounded to three decimal places as needed.)

c. Describe the relationship between x and y.

There is a strong positive linear

relationship between these two variables. As activations increase, satisfaction tends to increase.

Activations

Satisfaction

34.6

8.4

26.6

8.0

39.2

8.3

37.5

9.5

17.7

6.3

27.2

6.8

31.7

8.1

25.0

7.9

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