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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 '011/2015/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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Be-Line of unequal distribution

CeLine of equal distribution

D:-Line of poverty

Correct Answer: Option-C

Question30=1f 25% of the items in a distribution are less than 10 and 25% are more than 40, the quartile deviation is :

५25

0ھ

೦:15

5ھ

Correct Answer: Option-C

Question3 1=The standard deviation of the observations x and y is :

AcAbsolute value of (-y)/2

B:-Absolute value of (xy)

ہت

D:-None of these

Correct Answer: Option-A

Question32:The coefficient of variation of first four natural numbers is :

4

Avs?

B:-sqrt(0.4)

Cesqrt(0.2)

De-sqrt(2.5)

Correct Answer:- Option-C

Question33:The distribution of mortality rates with respect to the age after ignoring the accidental deaths will give:

AvPositively skewed distribution

B:-Negatively skewed distribution

CeSymmetric distribution

D:-None of these

Correct Answer:- Option-A

‘Question34:Which one of the following is true for a discrete distribution?

Arpy>t

وا ؛ظ <3

6:14 >3

+0 <2

Correct Answer:- Option-A

Question35:"The sum of squares of deviations is least when measured from :

AvMedian

B-Mean

ധം

D:-None of these

Correct Answer:- Option-B

Question36:The axiomatic approach to probability was proposed by:

‘AvKarl Pearson

B:-Laplace

CrA, Kolmogorov

DAN, Kolmogorov

Correct Answer:- Option-D

Question3 710 persons are seated on 10 chairs at a round table. The probability that two specified persons are sitting next to each other is:

கம்

त

1

76

os

1

3

Correct Answer: Option.

Quostion38Which of the following statement is most correct:

AcP(AB) = P(A)

മുട AB)

ഷേമ ഞമ)

0171

Correct Answer: Option ©

Question39-A random sample of 10 different observations is given. How many samples of [(s,»}-«< »] can be formed is:

وسيم

೫:90

0:60

0:30

ட்ட. Option-A

Question40:If P(A)=P(B)=P(C)=0.5, P(AB)=P(AC)

“+5

B:-0.20

c:0.10

0-0

ட்ட... B

ष.

D:

(BC)=0.2 and P(ABC)=0.1, then P(A-B-C) is :

Question4 1=The probability of choosing a square of dimension 2 from a chess board of dimension 8 is:

1

ا ماج ماع

D:-None of these

Correct Answer:- Option-D

Question 2-IfA and B are exhaustive and equally likely events with P(AB)=

۸6

284

த

2, then P(A) is:

http://192.168.1.6/psc/modules/marklist/answer_sheet/pr.

07/07/2015 02:59 PM

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