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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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D:-None of these

Correct Answer:- Option-B

‘Quostont3-A problem in statistics s given to students A,B and C whose chances of solving tare 4, 3 and + respectively. The probability that exactly one solves the problem

ag

me

or

०४

Correct Answer:- Option-D

‘Question44:Which of the following statement is true 7

AvDisjoint events are independent

B:-Independent events may be disjoint

CBoth options 1 and 2

D:-None of these

Correct Answer:- Option-B

(Question4 5:Five events are said to be mutually independent if they have to satisfy

۸6

20

೦:28,

2:32

Correct Answer:- Option-A

Question’

1

க்ஷ

‘Two friends decided to meet between 2pm and 3pm with the proviso that one waits the other for at most 20 minutes. The chance of their meeting

B:

crs

Correct Answer:- Option-D

‘Question4 7:Bayes" formula is used to obtain the probabilities of:

AvPosterior events

B:-Likelihood events

CePrior events

D:-None of these

Correct Answer:- Option-A

Question48"The distribution which holds the property non correlation of random variables implies independence

AvBivariate normal

B:-Bivariate exponential

CBivariate Cauchy

D:-None of these

Correct Answer:- Option-A

Question49:The Union Minister of Statistics and Program Implementation is:

بصعم V. K. Singh

B:-Rajnath Singh

(CeSmriti Irani

D:-Venkia Naidu

Correct Answer:- Option-A

Question50:The mean sum of squares is obtained by dividing the sum of squares by:

கடுக of the sample

B:-Degrees of freedom

CeSquared degrees of freedom

D:-Squared sample size

Correct Answer:- Option-B

QuestionS1-The method of moment estimator for @ in a uniform distribution over [-0,0 ] with sample mean 10 and sample variance 4 is:

عم

Be2d

೦:10

2:0.

Correct Answer:- Option-A

Question52:A consistent estimator of © in a Poisson distribution with parameter 0 is:

‘Ax-Square of sample mean

B:-Sample mean

C:-Sample variance

D:-Sample mean- sample variance

Correct Answer:- Option-A

Question5 3:"The degrees of freedom associated to error sum of squares in one-way ANOVA having n observations and k treatments

ഷി

പില്

പം

പിട

Correct Answer:- Option-C

Questions!

۸0

‘The sum of all two digit numbers formed using the digits 1, 2, 3 and 4 if each digit is used exactly once is:

D:-None of these

Correct Answer:- Option-C

QuestionS5:The moment generating function M(t) of a random variable X exists at:

‘ArAny real value of t

B:

C+Neighborhood of zero

D:-Deleted neighborhood of zero

Correct Answer:- Option-C

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07/07/2015 02:59 PM

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