# Question

The following table gives the distribution of the amounts of rainfall (in inches) for July 2012 for 50 cities.

Rainfall Number of Cities

0 to less than 2.......... 6

2 to less than 4.......... 10

4 to less than 6.......... 20

6 to less than 8.......... 7

8 to less than 10.......... 4

10 to less than 12......... 3

Find the mean, variance, and standard deviation. Are the values of these summary measures population parameters or sample statistics?

Rainfall Number of Cities

0 to less than 2.......... 6

2 to less than 4.......... 10

4 to less than 6.......... 20

6 to less than 8.......... 7

8 to less than 10.......... 4

10 to less than 12......... 3

Find the mean, variance, and standard deviation. Are the values of these summary measures population parameters or sample statistics?

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