MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Question

the tabnle below indicaten the number of years of experience of a sample of salesperson who work for Babble pty ltd. and their corresponding number of sales over the last month. 

years of experience (x)                number of sales (y)

13                                                21

7                                                  17

2                                                    8

6                                                    14

8                                                     15

5                                                      11

By completion the table below, and then applying the relevent formulae, determine the line of best fit for this bivariate data set.

x          y      x2       xy

Ex=   Ey=  Ex2=    Exy=

 

Estimate the number of sales that would have been made in a  month by a salesperson who has 11 years of experience.

 

Using your calculator, determine the coefficient for the data set, interpret the answer.

 

Compute the coeffiticient of determine for the data set. interpret your answer.

 

 

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