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

Question:

The following table gives the 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? Distribution
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