Statistics MCQs

Page No. 52

Probability distribution of a random variable is also know as Probability_________________?


aProbability Function


b Distribution Function


cProbability Distribution


dProbability Density Function



The probability function is always______________?


aNegative


bNon Negative


cPositive


dNone


View Answer Non Negative

A discrete probability distribution may be represented by____________?


aA Table


bA Graph


cA mathematical Equation


dAll of these


View Answer All of these

For discrete random ‘X’, the expectation of X i.e., E(x) is equal to:________________?


a∑P(x)


b∑x.P(x)


c ∑x2P(x)


dOne


View Answer ∑x.P(x)

If a & b are constants, then Var (a + bX) equal to_________________?


aVar(bX) + a


bb2 Var(X)


c b Var(x)


dNone of these


View Answer b2 Var(X)

The number of defective bulbs in a lot is example of ____________?


aContinuous variable


bDiscrete variable


cFunction


dNone of these


View Answer Discrete variable

A random variable is ____________ ?


a Not a function


bA continuous variable


cA function


dNone of these


View Answer A function

A function probability that a random variable of x has a value less than is called _____________?


a Random function


bDistribution function


cContinuous function


dprobability function


View Answer Distribution function

_________ are the numbers obtained by some random process?


aTwo- digit number take


b Random table


cPack


d Non of these


View Answer Random table

Two digit random numbers are ________________?


a2


b10


c99


d100


View Answer 10

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