## Kerala PSC Previous Years Question Paper & Answer

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

Page:3

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

3 of 8

D:-Antilog( 21> 8 92"

Question29:The mean of the distribution, in which the value of x are 1,2,....n, the frequency of each being unity is
೫೫51)

5

De-none of these

Question30:"The mean of 20 observations is 15. On checking it was found that two observations were wrongly copied as 3 and 6. If wrong observations are replaced by correct values 8 and 4, then t

۸-5,
285
വട
5:145
Question3 1-Sum of absolute deviations about median is
கர்கள்‌
B:-greatest
एव्म
D-equal
Question32-If each of a set of observations of a variable is multiplied by a constant (non-zero) value, the variance of the resultant variable
‘Avis unaltered
B:-increases
Crdecreases
D:-is unknown
(Question33:The standard deviation of a distribution is 5. The value of the fourth central moment 14 in order that the distribution be mesokurtic should be
Avequal to 3
Be-greater than 1875
Ceequal to 1875
Deless than 1875
Question34~In a frequency curve of scores the mode was found to be higher than the mean. This shows that the distribution is
Avsymmetric
Be-negatively skewed
Cepositively skewed
D:-normal
(Question35:The probability of drawing any one spade card from a pack of cards is,

Question36~A coin is tossed three times in succession, the number of sample points in sample space is

۸6

28

ces

Dea

Question37~A single letter is selected at random from the word ‘probability’. The probability that it is a vowel is

3

Ack
1

B:

D:

(Question38A number is chosen at random among the first 120 natural numbers. The probability of the number chosen being a multiple of § or 15 is,

1
க்ஷ
1

oT 6

D:-none of these

Cnestons8-f and are wo indopendent events, th probably hat both ജി nother ftom acer i. the probably the ‏مجعم‎ of

ए.