Statistics MCQs

Page No. 44

Regression co-efficient is denoted by_____________?


aby


bbyx


cbzx


dm


View Answer byx

When the two regression lines coincide there r is __________________?


aZero


b Less than zero


cMore than zero


dGreat


View Answer Zero

The regression co-efficient are _________ origin?


aDependent


bIndependent


cScale


dBoth


View Answer Independent

Least square regression line always passes through ____________________?


a (x,y)


b (X,Y)


c (X,Z)


d x/y


View Answer (X,Y)

In a Poisson probability distribution __________________?


aThe mean and variance of the distribution are same (equal)


bThe probability of success is always greater than 5


cThe number of trials is always less than 5


d it always contains a contingency table



Which of the following is not a correct statement about a Probability _________________?


aIt must have a value between 0 and 1


bIt can be reported as a decimal or a fraction


c A value near 0 means that the event is not likely to occur/happens


dIt is the collection of several experiment



The special rule of multiplication of probability, the events must be ______________?


aIndependent


bMutually exclusive


cBayesian


dEmpirical


View Answer Independent

if you roll a pair of dice, what is the probability that (at least) one of the dice is a 4 or the sum of the dice is 7 ?


a 4/36


b13/36


c21/36


d 15/36


View Answer 15/36

If the occurrence of one event means that another cannot happen, then the events are _______________?


aIndependent


b Mutually Exclusive


cBayesian


dEmpirical


View Answer Mutually Exclusive

5C5 is equal to ________________?


a5


b5×5


c1


dNone of these


View Answer 1

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