Listed below are the numbers of hurricanes that occurred in each year in a certain region. The data are listed in order by year. Find the range, variance, and standard deviation for the given sample data. Include appropriate units in the results. What important feature of the data is not revealed by any of the measures of variation?

16	4	16	4	17	20	7
7	4	2	10	13	6	4

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Part 1

The range of the sample data is

enter your response here

hurricanes.hurricanes.

years.years.

years squared .years2.

hurricanes squared .hurricanes2.

(Round to one decimal place as needed.)

Part 2

The standard deviation of the sample data is

enter your response here

hurricanes squared .hurricanes2.

years squared .years2.

hurricanes.hurricanes.

years.years.

(Round to one decimal place as needed.)

Part 3

The variance of the sample data is

enter your response here

years.years.

hurricanes.hurricanes.

years squared .years2.

hurricanes squared .hurricanes2.

(Round to one decimal place as needed.)

Part 4

What important feature of the data is not revealed through the different measures of variation?

A.

The measures of variation reveal nothing about how the numbers of hurricanes are spread.

B.

The measures of variation reveal no information about the scale of the data.

C.

The measures of variation reveal nothing about the pattern over time.

D.

The measures of variation do not reveal the difference between the largest number of hurricanes and the smallest number of hurricanes in the data.