## Kerala PSC Previous Years Question Paper & Answer

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

Page:7

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: 7 out of 8
Excerpt of Question Code: 005/2015/OL

Azpower of the test
B:-power function
C+0C function
D:-none of the above
Question?
۸32
B:-28.125
D:-none of the above
Question’:
AvZtest
ட ட்‌]
ടട
D:-ttest
Question79sTesting Ho: =1500 against <1500 leads to
Avone-sided lower tailed test
B--one-sided upper tailed test
Crtwo-tailed test
Dell the above

Question80:"The mean difference between 9 paired observations is 15.0 and the standard deviation of differences is 5.0. The value of statistic t is

Question 1+Range of statistic t is
கமகம

tow

Question 2--Given the following eight sample values -4, -3, -3, 0, 3,3, 4,4 the value of student's tstatiste to test Ho : ८ =

۸23
B:-0.97
0.3.30
01

Question 3-In a contingency table, the expected frequencies are computed under
‘Aenull hypothesis fy

Bealternative hypothesis 11,
71
D:-no consideration of hypothesis
(Question 4"The term regression was introduced by
ಟಟ
B:-Sir Francis Galton
C+Karl Pearson
D:-none of the above
Questions:

if yy and yy are two regression coefficients they have

Avsame sign
B:-opposite sign
பணியிட same or opposite signs
D:-nothing can be said

Question86:"The lines of regression intersect at the point
۸0

பயறு
5-6.۷

‘Question8 7:Ifa constant 50 is subtracted from each of the value of X and Y, the regression coefficient is
Avreduced by 50

bi thot the orignal regression cont

Crincreased by 50
De-not changed

(Question 8-If pis the simple correlation coefficient, the quantity p” is known as
Axcoefficient of determination
B:-coefficient of non-determination
೦೦೦೦೫೩10೫೭ of alienation

D:-none of the above
Question89:The range of simple correlation coefficient is
۸-0 0
Bee tox
೦:೦೫ 1

Question90:"The hypothesis for a specific known value of » can be tested by
Axttest
BeZtest

population is distributed as N(, 1 ).0 A sariple.bf 576 items has a mean 4.7. The value of the statistic Z to test ॥ कह

sample of 12 specimen taken from a normal population is expected to have a mean 50 mg/cc. The sample has a mean 64 mg/cc with a variance of 25. To test Ho

०1:५५ 5

05/25/2015 03:06 PM