A. Compute the covariance between first weekend gross and national gross, first weekend gross and worldwide gross, and national gross and worldwide gross. Compute the covariance between first weekend gross and national gross. B.  Compute the coefficient of correlation between first weekend gross and national gross, first weekend gross and worldwide gross, and national gross and worldwide gross. Compute the coefficient of correlation between first weekend gross and national gross. C. Which is more valuable in expressing the relationship between first weekend gross, national gross, and wordwide gross, the covariance or the coefficient of correlation? Explain. 1.The correlation coefficient is more valuable for expressing the relationship between first weekend gross, national gross, and worldwide gross because it can prove that there is a causation effect between first weekend gross, national gross, and worldwide gross. 2. The correlation coefficient is more valuable for expressing the relationship between first weekend gross, national gross, and worldwide gross because it does not depend on the units used to measure first weekend gross, national gross, and worldwide gross. 3.The covariance is more valuable for expressing the relationship between first weekend gross, national gross, and worldwide gross because it measures the relative strength between first weekend gross, national gross, and worldwide gross.

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
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A. Compute the covariance between first weekend gross and national gross, first weekend gross and worldwide gross, and national gross and worldwide gross.

Compute the covariance between first weekend gross and national gross.

B.  Compute the coefficient of correlation between first weekend gross and national gross, first weekend gross and worldwide gross, and national gross and worldwide gross.

Compute the coefficient of correlation between first weekend gross and national gross.

C. Which is more valuable in expressing the relationship between first weekend gross, national gross, and wordwide gross, the covariance or the coefficient of correlation? Explain.

1.The correlation coefficient is more valuable for expressing the relationship between first weekend gross, national gross, and worldwide gross because it can prove that there is a causation effect between first weekend gross, national gross, and worldwide gross.

2. The correlation coefficient is more valuable for expressing the relationship between first weekend gross, national gross, and worldwide gross because it does not depend on the units used to measure first weekend gross, national gross, and worldwide gross.

3.The covariance is more valuable for expressing the relationship between first weekend gross, national gross, and worldwide gross because it measures the relative strength between first weekend gross, national gross, and worldwide gross.

Movie companies need to predict the gross receipts of individual movies after a movie has debuted. The accompanying results are the first weekend gross, the national gross, and the worldwide gross (in millions of dollars) of six movies. Complete parts (a) through (d) below.
Click the icon to view the gross receipts of the six movies.
a. Compute the covariance between first weekend gross and national gross, first weekend gross and worldwide gross, and national gross and worldwide gross.
Find the covariance between first weekend gross and national gross.
(Round to four decimal places as needed.)
Gross receipts of six movies
Title
Movie A
Movie B
Movie C
Movie D
Movie E
Movie F
First
Weekend
90.312 317.959
88.758 261.796
93.017 249.124
102.481 290.234
77.283 292.977
77.751 301.585
Print
C
National Worldwide
Gross
Gross
976.615
878.634
795.518
896.028
938.893
934.511
Done
- X
Transcribed Image Text:Movie companies need to predict the gross receipts of individual movies after a movie has debuted. The accompanying results are the first weekend gross, the national gross, and the worldwide gross (in millions of dollars) of six movies. Complete parts (a) through (d) below. Click the icon to view the gross receipts of the six movies. a. Compute the covariance between first weekend gross and national gross, first weekend gross and worldwide gross, and national gross and worldwide gross. Find the covariance between first weekend gross and national gross. (Round to four decimal places as needed.) Gross receipts of six movies Title Movie A Movie B Movie C Movie D Movie E Movie F First Weekend 90.312 317.959 88.758 261.796 93.017 249.124 102.481 290.234 77.283 292.977 77.751 301.585 Print C National Worldwide Gross Gross 976.615 878.634 795.518 896.028 938.893 934.511 Done - X
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