Kerala PSC Previous Years Question Paper & Answer
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Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'Statistician' And exam conducted in the year 2023. And Question paper code was '021/2023/OL'. Medium of question paper was in Malayalam or English . Booklet Alphacode was ''. 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.
FINAL ANSWER KEY
Question 21/2023/0ட
Paper Code:
Category 255/2022
Code:
Exam: Statistician
Date of Test 12-04-2023
Department KIRTADS
Question1:-lf f is convex and EX is finite, then f(EX) < Ef(X) is known as
A:-Liapounov's inequality
B:-Schwarz inequality
C:-Jensen's inequality
D:-Cauchy inequality
Correct Answer:- Option-C
Question2:-If X and Y are uniformly distributed on (0, 1), then E(|X — Y|) is
A:-= 3
8:-ട 85
1
D:-s 0
Correct Answer:-Question Cancelled
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٢۷
Question3:-Let X be a random variable with characteristic function given by (५),
then the value of Var(Sin x) + Var(Cos x) =
A:-1 — |)?
B:-|1 — Oo
C:-1 - |۵
D:-|1 — Oa
Correct Answer:- Option-C
Question4:-lf probability of hitting a target is 0.5, what is the probability of hitting
the target on ௭ attempt
A:-0.5
B:-(0.5)°
C:-0.25
D:-(0.5)8
Correct Answer:- Option-B
Question5:-Buses travel on every half hours in day times in a remote area. What is
the probability that a man reaching bus stop in day time will have to wait for 20
minutes ?