The following relative frequency distribution was constructed from a population
ID: 3173294 • Letter: T
Question
The following relative frequency distribution was constructed from a population of 350. Calculate the population mean, the population variance, and the population standard deviation. (Negative values should be indicated by a minus sign. Round your intermediate calculations to 4 decimal places and final answers to 2 decimal places.)
Class
Relative Frequency
20 up to 10
0.24
10 up to 0
0.32
0 up to 10
0.34
10 up to 20
0.10
Population mean
Population variance
Population standard deviation
The following relative frequency distribution was constructed from a population of 350. Calculate the population mean, the population variance, and the population standard deviation. (Negative values should be indicated by a minus sign. Round your intermediate calculations to 4 decimal places and final answers to 2 decimal places.)
Explanation / Answer
N 350 class relative frequency frequency (fi) mid point (mi) mi * fi mi^2 * fi -20 to -10 0.24 84 -15 -1260 18900 -10 to 0 0.32 112 -5 -560 2800 0 to 10 0.34 119 5 595 2975 10 to 20 0.1 35 15 525 7875 Total 350 -700 32550 Population mean -2 Population variance 89.00 standard deviation 9.43
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