Question

Fifty cities provided information on vacancy rates (in percent) for local apartments in the following frequency distribution.
Vacancy Rate (in percent) ...... Frequency
0 up to 3 .............. 5
3 up to 6 .............. 5
6 up to 9 .............. 10
9 up to 12 ............. 20
12 up to 15 ............ 10

a. Calculate the average vacancy rate.
b. Calculate the variance and the standard deviation for this sample.



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  • CreatedJanuary 28, 2015
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