## Prob (X = 1) = ¼, Prob (X = 2) = ½, Prob (X = 3) = ¼, where Prob (X = k) is the probability that X = k, for k = 1, 2, and 3. What is the var

Question

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## Answers ( )

Answer:We can calculate the moment of second order and we got:

And we can calculate the variance like this:

And the deviation would be:

Step-by-step explanation:For this case we have the following distribution:

X 1, ,2, 3

P(X) 0.25, 0.5, 0.25,

We can calculate the expected value with this formula:

We can calculate the moment of second order and we got:

And we can calculate the variance like this:

And the deviation would be: