For the exercise on temperature and the utility bill, what is the sample covariance ?MonthTemperatureUtility Bill 140105−2025−50025585−55−25360750−50465705-10−505806520-15−300Sum30040000−875Mean6080 Group of answer choices-300-875

Given information: Month Temperature Utility Bill 1 40 105 2 55 85 3 60 75 4 65 70 5 80…

Answered: For the exercise on temperature and the…

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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For the exercise on temperature and the utility bill, what is the sample covariance ?

Month	Temperature	Utility Bill
1	40	105	−20	25	−500
2	55	85	−5	5	−25
3	60	75	0	−5	0
4	65	70	5	-10	−50
5	80	65	20	-15	−300
Sum	300	400	0	0	−875
Mean	60	80

Group of answer choices

-300

-875

Definition Definition Measure of how two random variables change together. Covariance indicates the joint variability or the directional relationship between two variables. When two variables change in the same direction (i.e., if they either increase or decrease together), they have a positive covariance. When the change is in opposite directions (i.e., if one increases and the other decreases), the two variables have a a negative covariance.

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