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Use the data to create a scatterplot of the relationship between Bill Total and Tip Given. Bill Total Tip Given 11.45 2.00 17.50 1.50 19.80 5.50 22.00 4.00 23.25 6.90 24.50 3.50 25.75 5.00 33.20 5.80 37.50 1.00 45.15 8.85 48.60 6.40     Looking at the scatterplot, what is the strength and direction of this relationship?   Strength: _________________   Direction: _________________   Find the correlation coefficient for this relationship. r = ______________   Looking at the graph, there appears to be an outlier in this data set. What bill and tip pair from the data set is the outlier?   Outlier: x = ________ and y = _________   Remove the outlier from the data set. Find the correlation coefficient again.   r = ______________ (without outlier)

Use the data to create a scatterplot of the relationship between Bill Total and Tip Given. Bill Total Tip Given 11.45 2.00 17.50 1.50 19.80 5.50 22.00 4.00 23.25 6.90 24.50 3.50 25.75 5.00 33.20 5.80 37.50 1.00 45.15 8.85 48.60 6.40     Looking at the scatterplot, what is the strength and direction of this relationship?   Strength: _________________   Direction: _________________   Find the correlation coefficient for this relationship. r = ______________   Looking at the graph, there appears to be an outlier in this data set. What bill and tip pair from the data set is the outlier?   Outlier: x = ________ and y = _________   Remove the outlier from the data set. Find the correlation coefficient again.   r = ______________ (without outlier)

MATLAB: An Introduction with Applications
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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  1. Use the data to create a scatterplot of the relationship between Bill Total and Tip Given.

Bill Total

Tip Given

11.45

2.00

17.50

1.50

19.80

5.50

22.00

4.00

23.25

6.90

24.50

3.50

25.75

5.00

33.20

5.80

37.50

1.00

45.15

8.85

48.60

6.40

 

 

  1. Looking at the scatterplot, what is the strength and direction of this relationship?

 

Strength: _________________

 

Direction: _________________

 

  1. Find the correlation coefficient for this relationship. r = ______________

 

  1. Looking at the graph, there appears to be an outlier in this data set. What bill and tip pair from the data set is the outlier?

 

Outlier: x = ________ and y = _________

 

  1. Remove the outlier from the data set. Find the correlation coefficient again.

 

r = ______________ (without outlier)

 

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