eng 00.3 140 Submit This Question: 4 pts 11 of 15 This Quiz: 40 pts po Listed be
ID: 3353474 • Letter: E
Question
eng 00.3 140 Submit This Question: 4 pts 11 of 15 This Quiz: 40 pts po Listed below are the top 10 annual salaries (in millions of dollars) of TV personalities. Find the range, variance, and standard deviation for the sample dat Given that these are the top 10 salaries, do we know anything about the variation of salaries of TV personalities in general? 38 37 35 29 19 18 15 11 10.7 98 The range of the sample data is $ million. (Type an integer or a decimal.) The variance of the sample data is(Round to two decimal places as needed.) The standard deviation of the sample data is $ million (Round to two decimal places as needed.) Click to select your answer(s) Save for Later 907 PM 0 Type here to search upExplanation / Answer
a) range = maximum - minimum = 38 - 9.8 = 28.2
b) mean = (38 + 37 + 35 + 29 + 19 + 18 + 15 + 11 + 10.7 + 9.8) / 10 = 22.25
Variance = [(38 - 22.25)2 + (37 - 22.25)2 + (35 - 22.25)2 + (29 - 22.25)2 + (19 - 22.25)2 + (18 - 22.25)2 + (15 - 22.25)2 + (11 - 22.25)2 + (10.7 - 22.25)2 + (9.8 - 22.25)2] / 9 = 129.99
c) standard deviation = sqrt(129.99) = 11.40
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