The following table shows the probability distribution for a discrete random variable.
x- 12,15,17,20,22,24,25,30
p(x)- 0.07,0.21,0.17,.025,0.05,0.04,0.13, 0.08

the mean of the discrete random variable x is 19.59. what is the variance of x? round your answer to the nearest hundredth.

The solution to the problem is as follows:

The answer is 23.18 

Variance = (12-19.59)^2 (.07) + (15-19.59)^2 (.21) + ... + (30-19.59)^2 (.08) = 23.18 

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