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

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


aIt must have a value between 0 and 1

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bIt can be reported as a decimal or a fraction

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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

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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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