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SSC CGL JSO 2021 Q.O.D series


Question 108:Change of origin ____the value of F
a) does not affect
b) affects
c) affects in only specified cases
d) None of these

SSC CGL JSO 2021 Q.O.D series


Question 107:F-test has median equal to:
a) 0
b) 1
c) ∞
d) None of these

SSC CGL JSO 2021 Q.O.D series


Question 106: If the logarithmic of the given values shows more or less a linear path against the given time periods, then the trend equation can be taken to be (2015)
a) Linear
b) Exponential
c) either linear or exponential
d) none of the above

SSC CGL JSO 2021 Q.O.D series


Question 105: Compute the variance of the following numbers: 5, 6, 4 and 2
a) 2.187
b) 2.7
c) 1.2
d) 2.2

SSC CGL JSO 2021 Q.O.D series


Question 104:Regression coefficients depend on____.
a)origin
b) scale
c) both a &b
d) none

SSC CGL JSO 2021 Q.O.D series


Question 103:If a box contains 4 red balls and 6 blue balls then what is the probability of picking 2 balls of the same colour?(2017)
a) 8/15
b) 12/25
c) 13/25
d) 7/15

SSC CGL JSO 2021 Q.O.D series


Question 74: _________ helps in studying the pattern of correlation between variables.
a) variance
b) Correlation
c) regression
d) covariance

SSC CGL JSO 2021 Q.O.D series


Question 73:Five persons A, B, C, D, and E occupy seats in a row at random. The probability that A and B sit next to each other is:
(2018)
a) 1/4
b) 1/2
c) 2/5
d) 1/3

SSC CGL JSO 2021 Q.O.D series


Question 72: Find the mode of the given data set:
9, 7, 19, 121, 12, 17, 81, 51, 44, 77, 71, 8, 5, 4
a) 71
b) no mode
c) 0
d) 81

SSC CGL JSO 2021 Q.O.D series


Question 71: Which one of the following is not a method of determining trend in time series? (2014)
a) Moving average method
b) Ratio to trend method
c) Method of mathematical curve fitting
d) Semi average method

SSC CGL JSO 2021 Q.O.D series


Question 70: Which of the following is free from upward and downward bias
a)Fisher’s index
b) Paasche index
c) Kellye’s index
d) Dorbish’ index

SSC CGL JSO 2021 Q.O.D series


Question 69: Regression coefficients independent of____.
a)origin
b) scale
c) both a &b
d) none