MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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#6 pt 1
Consider the following data:
A women’s clothing department wants to find out if there is a relationship (and what kind of relationship) between the price of an item and the time that it takes to a customer to decide in buying that item.
|
Item Price (x) |
Decision Time (in minutes) (Y) |
|
$30 |
12 |
|
$20 |
8 |
|
$300 |
37 |
|
$80 |
20 |
|
$78 |
15 |
|
$25 |
10 |
|
$17 |
9 |
|
$63 |
14 |
|
$150 |
20 |
|
$250 |
30 |
|
$10 |
4 |
|
$8 |
5 |
|
$180 |
27 |
|
$260 |
28 |
NOTE: For the following questions you can use excel analysis or a calculator, it is your choice. The
- Using Excel construct a scatter plot. Discuss the output of the scatter plot.
- Give (or calculate) the
correlation coefficient . - Give (or calculate) the coefficient of determination.
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