Statistics MCQs

Page No. 25

The mean and the variance are equal in________________?


aAll probability distribution


bThe hypergeometric distribution


cThe binomial distribution


dThe Poisson distribution



If mean of the binomial probability distribution is 4.8, then variance of this distribution is :_______________?


a-2.3


b 5.3


c -4.8


d2.3


View Answer 2.3

When ‘n’ becomes very large, binomial distribution tends to ______________?


aPoisson dist


bStandard dist


c Normal dist


dHyper-geometric distribution


View Answer Normal dist

For a binomial distribution with n = 15 as p changes from. 50 toward. 05 the distribution will__________?


a Become more positively skewed


bBecome more negatively skewed


c Become symmetrical


dAll of the above.



In a binomial distribution, n = 10 p= 3/5, its mean is:_________________?


a6


b1


c 2/5


dNone of these


View Answer 6

Which of the following case is true for hyper geometric distribution________________?


aProbability remains constant for all the trials.


bProbability changes from trial to trial


cSuccessive trial are dependent


dBoth (b) & (c) but not (a)



The binomial distribution is symmetrical when:______________?


a P > q


b P = 1/2


cProbability of success & probability of failure are equal


dBoth (b) & (c) but not (a)



What is the mean of binomial distribution ____________?


aX


bn x p


cn(1 – 1)


d ∑fx/∑f


View Answer n x p

Binomial probability distribution is denoted by b(x ; n, p), is defined as _______________?


a {nx}px qn-x


b{nx}px(1 – P)x-n


c nCxpnqnx


d {nx}p(1 – P)x


View Answer {nx}px qn-x

Binomial word discovered at the end of ________________?


a14th century


b12th century


c10th century


d17th century


View Answer 17th century

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