Statistics MCQs

Page No. 43

Correlation coefficient is _________ of origin and unit of measurement?


aOrigin


bDependence


cIndependence


dNone


View Answer Independence

Correlation is _____________ of regression coefficients?


a A.M.


bG.M.


cM.D.


dH.M.


View Answer G.M.

If x = 3 then value of regression co-efficient of X or Y is ________________?


a(3)


b(0)


c-3


d-4


View Answer (0)

In correlation, both variables are______________?


a Random


bFixed


cNon-random


dExperimental


View Answer Random

If y = 2 + 6x then value of y intercept is _________________?


a6


b2


c0


dNone


View Answer 6

A model is linear if it is linear in the dependent variable and also in ______________


aParameter


b Independent variable


cError term


d Non of these


View Answer Parameter

The two regression co-efficient always have the __________ sign?


aDifferent


bSame


cNone of these


d +ve


View Answer Same

If r, between u = x and y = -x is _______________?


a +1


b -1


c0


dNon of these


View Answer -1

Which of the following can never be taken as coefficient of correlation is _____________?


a -99


b.99


c0


d√3


View Answer √3

Correlation coefficient lies between__________________?


a 0 ≤ r ≤ 1


b 0 ≤ r ≤ -1


c-1 ≤ r ≤ 1


d1 ≤ r ≤ 0


View Answer -1 ≤ r ≤ 1

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