Skip to content
Related Articles

Related Articles

ISRO | ISRO CS 2009 | Question 78
  • Last Updated : 05 Jun, 2018

If the pdf of a Poisson distribution is given by f(x) = (e-22x)/x!, then its mean is
(A) 2x
(B) 2
(C) -2
(D) 1

Answer: (B)

Explanation: f(x) = (e-22x)/x!
In the poison distribution expression,
e λk)/k!
here, k = number of events
λ = expected value/ average/ mean over ‘k’ number of values

So, mean = 2, option (B) is correct.

Quiz of this Question

Attention reader! Don’t stop learning now. Get hold of all the important DSA concepts with the DSA Self Paced Course at a student-friendly price and become industry ready.

My Personal Notes arrow_drop_up
Recommended Articles
Page :