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Advertising expenses are a significant component of the cost of goods sold. Listed below is a...

Advertising expenses are a significant component of the cost of goods sold. Listed below is a frequency distribution showing the advertising expenditures for 40 manufacturing companies. Estimate the mean, median, and standard deviation of advertising expense. (Round the final answers to 2 decimal places.)

Advertising Expenditure
($ millions)		 Number of companies
$25 to under $35 2
35 to under 45 8
45 to under 55 15
55 to under 65 10
65 to under 75 5
Total 40

Mean            

Median           

Standard deviation           

Math   Statistics-And-Probability   
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