## Kerala PSC Previous Years Question Paper & Answer

Title : STATISTICAL ASSISTANT GR II -ECONOMICS AND STATISTICS
Question Code : A

Page:6

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.

page: 6 out of 8
Excerpt of Question Code: 005/2015/OL

20.5

(Question6 3-1FZ is a standard normal variate, the proportion of items lying between 7=-0.5 and z=-3.0 is
۸7
B:-0.1915

D:-0.3098

(Question64:Factorization theorem for sufficiency is known as
‘AvRao-Blackwell theorem

Cramer-Rao theorem

C:Chapman-Robins theorem

D:-Fisher-Neyman theorem

Question6 5:If the expected value of an estimator is not equal to its parametric function r() , itis said to be a
Avunbiased estimator
Be-biased estimator

Ceconsistent estimator
Ds-none of the above.

Question66An estimator 7; of @ is said to be more efficient than any other estimator 7” _n) of # if and only if

കാ ஐ)

ന്നി
‏ل وما‎
ಸಾರ್ಸ್‌

D:-All the above

டத

Le

the sample variance, then s? is an unbiased estimate of

is the population variance and s°

Question68="The sample median is estimate for the mean of normal population.
‘Avunbiased,
B:-consistent
Ceunbiased and consistent
Ds-none of the above.
Question69-If a sufficient estimator exists it is a function of the estimator.
‘Armoment estimator
‘minimum chisquare estimator
C+maximum likelihood estimator

D:-none of the above

Question70:The credit of inventing the method of moments for estimating the parameter goes to
AGR. A. Fisher
B:J. Neyman

D:-Karl Pearson

Question? 1-Cramer-Rao inequality with regard to the variance of an estimator provides

A-upper bound on the variance

Jower bound on the variance

Crasymptotic variance of an estimator

D:-none of the above

Question72:If Xj, 2¥ . »isayrantiom sample from a population N(0,o?

the sufficient statistic for 2” is

D:-none of the above
Question73:Estimate and Estimator are
‘Avsynonyms
B-related to population

D:-none of the above
Question74The idea of testing of hypothesis was first set forth by
ಟಟ
J.Neyman
CrE.L.Lehman
84
Avone kind of error
B:-two kinds of errors
Crthree kinds of errors
D:-four kinds of errors