Expected value  , variance  , and standard deviation

MATLAB: An Introduction with Applications
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Random variable

Expected value  , variance  , and standard deviation  

 

a)  For the following random variable X, find the expected value  , variance  , and standard deviation  

 

X=x 0 1 2 3 4
P(X=x) 1/16 4/16 6/16 4/16 1/16

 

 

b)  For the following random variable X, find the expected value  , variance  , and standard deviation  

 

X=x -2 0 2 4 6
P(X=x) 0.15 0.15 0..2 0.25 0.25

 

 

 

 

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