Statistics MCQs

Page No. 25

The mean and the variance are equal in________________?


aAll probability distribution

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bThe hypergeometric distribution

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cThe binomial distribution

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dThe Poisson distribution

✓



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


a-2.3

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b 5.3

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c -4.8

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d2.3

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View Answer 2.3

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


aPoisson dist

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bStandard dist

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c Normal dist

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dHyper-geometric distribution

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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

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bBecome more negatively skewed

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c Become symmetrical

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dAll of the above.

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


a6

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b1

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c 2/5

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dNone of these

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View Answer 6

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


aProbability remains constant for all the trials.

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bProbability changes from trial to trial

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cSuccessive trial are dependent

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

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The binomial distribution is symmetrical when:______________?


a P > q

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b P = 1/2

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cProbability of success & probability of failure are equal

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

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What is the mean of binomial distribution ____________?


aX

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bn x p

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cn(1 – 1)

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d ∑fx/∑f

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View Answer n x p

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


a {nx}px qn-x

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b{nx}px(1 – P)x-n

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c nCxpnqnx

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d {nx}p(1 – P)x

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View Answer {nx}px qn-x

Binomial word discovered at the end of ________________?


a14th century

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b12th century

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c10th century

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d17th century

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View Answer 17th century

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