Question

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?1

13 1 19 12 13 15 7

4 10 4 18 3 10 8

The range of the sample data is hurricanes. years squared . hurricanes. years. hurricanes squared . ​(Round to one decimal place as​ needed.)

The standard deviation of the sample data is   hurricanes. years. hurricanes squared . hurricanes. years squared . ​(Round to one decimal place as​ needed.)

The variance of the sample data is   hurricanes squared . years. hurricanes squared . hurricanes. years squared . ​(Round to one decimal place as​ needed.)

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.

Answer 1

range of the sample data is =max-min =19-1 =18 hurricanes

standard deviation of the sample data =5.6  hurricanes

variance of the sample data =31.3 hurricanes squared

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