Movie companies need to predict the gross receipts of individual movies after a movie has debuted.

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.

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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.

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​(Round to four decimal places as​ needed.)

Find the covariance between first weekend gross and worldwide gross.

nothing

​(Round to four decimal places as​ needed.)

Find the covariance between national gross and worldwide gross.

nothing

​(Round to four decimal places as​ needed.)

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.

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

nothing

​(Round to three decimal places as​ needed.)

Find the coefficient of correlation between first weekend gross and worldwide gross.

nothing

​(Round to three decimal places as​ needed.)

Find the coefficient of correlation between national gross and worldwide gross.