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Calculate Mean and Standard Deviation

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The random variable X is the number of houses per month sold by a realtor. The probability distribution is given below. Find the mean and standard deviation of X:

X (houses sold) / f(x)
____________________________________________

(0 , 0.24)
(1 , 0.01)
(2 , 0.12)
(3 , 0.16)
(4 , 0.01)
(5 , 0.14)
(6 , 0.11)
(7 , 0.21)

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Solution Summary

This will show you how to calculate means and standard deviations.

Solution Preview

Hello. In this case, you should know that f(x) is the same as y.
You should firstly find the mean of X
How you do this is simple:
You add up all of the value of each ...

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