Kerala PSC Previous Years Question Paper & Answer

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

Page:5


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.

page: 5 out of 8
Excerpt of Question Code: 011/2015/OL

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5078

Question56:1f- then dxdy is:

rcose and y=rsing with 2೨0, 0-9.

കള്‍ ൪96.
B0 drde
9496.
Dirdrd @
Correct Answer:- Option-D
Questions 7+ The characteristic function of a standard normal variate is:

Correct Answer:- Option-A
Question58: Francis Galton is pioneored in the study 08:
AcBiometry
B:Genetics
CoRegression
D:-Correlation
Correct Answer:- Option-C
Question59:The correlation coefficient of the bi variate data: (1,10), (2,9), (3,8) and (4,7) is
Al
85-1
006
D:-None of these
Correct Answer:- Option-B
Question60+Let r(x,y)=0.8. Then the explained variation in y due to x is:
۸8096
6
6
5:7096
Correct Answer:- Option B
Question6 1:1f both regression coefficients are positive, then their sun is always:
കമ
8:-1365 0010002 1 and 2
೦೧೩2
D:-None of these
Correct Answer:- Option-D
Question62:The line of best fit can be obtained by the principle of:
ArLoast squares
B:Moments

ಹ ‏كسمه‎
‎D:-Minimum chi-sqare
Correct Answer:- Option-A

Question6 3:The coefficients of determination is the square of:
‏يد‎
‎நபா
‏عجوي‎

Correct Answer:- Option-A

‎i,‏ ) مم ,06-٠

‏- کی ںا



‎A1
‎೫:-0.6
‎90.5
‎06
‎Correct Answer:- Option B
Question65:Probable error is used to test:
AxObserved correlation coefficient
B:Regression coefficients
CoRank correlation
D:-Consistency
Correct Answer:- Option-A

‎Question66+Let X be the number of successes follow B(n,p), then the distribution of failures follow:

‎കതത
‎एष,
‎೦:೫(2೩, 1-2)
D:-None of these
Correct Answer:- Option B
Question6 7+Let X follows B(n,p) is positively skewed if :

‎1
‎॥

‏الجميع



‎Dro‎Correct Answer:- Option-A

‎Question68:Crrelation coefficient befween the number of successes and failures in B(n,p) is:
Al
Bl
೦:0
D:-None of these
Correct Answer:- Option-B



‎Question69:Let X follows B(np) and define ‏جم‎ Var(¥) is:

‎क्त

‎ക്ത

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‎07/07/2015 02:59 PM

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