Solution 9BSC

From the given information, the following are the gross amounts (in millions of dollars) earned in box office receipts for the movie Harry Potter and the Half-Blood Prince are

From the given information, maximum data value is $58 million and minimum value is $4 million. We know that range of the given set of sample values found as follows:

Therefore, the range of the given set of observations is $54 million.

From the given information,. We know that variance of given set of sample value found as follows:

Therefore, the variance of the given sample is.

We know that standard deviation be the positive square root of the variance, that is

Therefore, the standard deviation of the given sample is $14.52 million.

In general, the investor would care about the gross from opening day and the rate of decline after that. But, the measure of center or variation do not measure it.

Solution 9BSC

From the given information, the following are the gross amounts (in millions of dollars) earned in box office receipts for the movie Harry Potter and the Half-Blood Prince are

From the given information, maximum data value is $58 million and minimum value is $4 million. We know that range of the given set of sample values found as follows:

Therefore, the range of the given set of observations is $54 million.

From the given information,. We know that variance of given set of sample value found as follows: