Kerala PSC Previous Years Question Paper & Answer
Page:4
Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'STATISTICAL ASSISTANT GR II ECONOMICS AND STATISTICS' And exam conducted in the year 2015. And Question paper code was '005/2015/OL'. Medium of question paper was in Malayalam or English . Booklet Alphacode was 'A'. Answer keys are given at the bottom, but we suggest you to try answering the questions yourself and compare the key along wih to check your performance. Because we would like you to do and practice by yourself.
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Correct Answer:- Option-A
Questiond 1:In the simultancous tossing of two perfect cains, the probability of having atleast one head is
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B:
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Correct Answer:- OptionC
Questiond 2:For two events ८1 , 02 if P(E) =
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Correct Answer:- Option B
Questiond 3:1f P(A/B)=7 and ए( 808):
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Correct Answer:- Option-A
Questiond4+1£ P, (x) and Py (x) be the marginal probability functions of two independent discrete random variables X and Y, then their joint probability function P(xy)=
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D:-None of these
Correct Answer:- Option B
Questons s The functon £ doine 100 ۲ ! है! اص
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‘Questiond 7:Var(2X + 3) if Var(X)=1is
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D:-none of these.
Correct Answer:- OptionC
Questiond8:E(x - is minimum when
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D:none of these
Correct Answer:- Option-C
Questiond9:The height of persons in a country is a random variable of the type
Axcontinuous random variable
Budiscrete random variable
Coneither discrete nor continuous random variable
D:-continuou as well as discrete random variable
Correct Answer:- Option-A
Question50+1£ X is a random variable, E(e"* ) is known as
‘Acharacteristic function
B:moment generating function
Coprobability generating function
D:none of these
Correct Answer:- Option B
Question5 1:-The mean and variance of a binomial distribution are & and 4 respectively. Then P(X=1)is equal to
7
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