X 5 8 9 4 10 6 p(X) 1/6 1/6 1/6 1/6 1/6 1/6
Mean : 7
Variance : 4.67
is the mean and variance correct? if wrong plz explain with formula
Last edited by balajikcp8; Feb 7th 2013 at 10:18 PM.
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Is this statics question naaaaaaaaaaaaaaa..............???????????
plz explain team if u have any idea........
Yes that is correct!
Remember the mean for a PMF is the sum from 0 to n of x*p(x) = E[x]
And the variance is E[x^2] - (E[x])^2
Which is p(x)*x^2 - ( p(x)*x)^2
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