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 'Research Officer - Economics and Statistics ' And exam conducted in the year 2021. And Question paper code was '123/2021'. 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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For a normal curve the Q.D, MD and SD are in the ratio:
(^) 6 ൯ 9
(0 0:4 (D) 10:12:15
If the variance of an estimator attains the C-R lower bound, the estimator is :
(^) Most efficient (B) Consistent
(C) Sufficient ൯) All of the above
For a random sample X,,X,,....X,, from 7)0, 20), the unbiased estimator of 0 is :
(A) Min X, (9) Max X,
© Min X, +Max X,) (9) त्र, X, + Max X,)
If X,,Xq,...,X, isa random sample from N(0,0) . Acomplete statistic for 0 is:
A) xX, ®) ൧
¢ xX (D) Allof the above
Degrees of freedom of a statistic is related to :
(A) Number of observations in a set
(B) Type 1 error
(C) Number of independent observations in a set
(D) None of these
Given a random sample X,,X,,....X, from the distribution with density function
ഗെ
F ,1
(x +0
against 77): © > ©) is:
(A) {x அய ௫) {x ടു
+ +
(C) {x ∶ ररि 1 > 0.03} (D) None of these
7 123/2021
[.7.0.]