ISRO | ISRO CS 2009 | Question 78
If the pdf of a Poisson distribution is given by f(x) = (e-22x)/x!, then its mean is
Explanation: f(x) = (e-22x)/x!
In the poison distribution expression,
here, k = number of events
λ = expected value/ average/ mean over ‘k’ number of values
So, mean = 2, option (B) is correct.
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