statistics MCQs – Page 38

Practise multiple-choice questions from statistics for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

741. A model is linear if it is linear in the dependent variable and also in ______________?
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A. Independent variable

B. Parameter

C. Non of these

D. Error term

742. Correlation coefficient lies between__________________?
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A. -1 ? r ? 1

B. 1 ? r ? 0

C. 0 ? r ? 1

D. 0 ? r ? -1

743. Regression co-efficient is denoted by_____________?
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A. byx

B. by

C. bzx

D. m

744. The regression co-efficient are _________ origin?
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A. Dependent

B. Both

C. Scale

D. Independent
745. Response variable is a_________?
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A. Fixed

B. Random variable

C. Whole

D. None of above

746. Attributes are _______ if they have some relation?
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A. None of these

B. In consistent

C. Disassociation

D. Associated
747. If y = 2 + 6x then value of y intercept is _________________?
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A. None

B. 2

C. 6

D. 0

748. In correlation, both variables are______________?
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A. Non-random

B. Experimental

C. Random

D. Fixed

749. To cut a population into three classes is called_______________?
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A. Attribute

B. Tracheotomy

C. Capital

D. Dichotomy

750. If bxy = -.8 by x = 1.2 then value of r is ________________?
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A. 0

B. ?.96

C. ?-.96

D. None of these
751. Correlation is _____________ of regression coefficients?
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A. H.M.

B. M.D.

C. G.M.

D. A.M.

752. When the two regression lines coincide there r is __________________?
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A. Less than zero

B. More than zero

C. Great

D. Zero
753. If x and y are Independent to each other the coefficient of correlation is _____________?
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A. 0.6

B. -1

C. 1

D. 0
754. Which of the following can never be taken as coefficient of correlation is _____________?
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A. ?3

B. -99

C. 0.99

D. 0

755. Least square regression line always passes through ____________________?
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A. (X,Z)

B. x/y

C. (x,y)

D. (X,Y)
756. The two regression co-efficient always have the __________ sign?
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A. None of these

B. Same

C. #NAME?

D. Different

757. Correlation coefficient is _________ of origin and unit of measurement?
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A. Independence

B. None

C. Dependence

D. Origin

758. The word regression was first founded by_________?
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A. Neyman person

B. Karl Pearson

C. Sir F Galton

D. R A Fisher

759. In x = 2 _________ 6y the value of y are increasing by one unit then values of x are?
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A. Increasing by 6

B. No change

C. Decreasing by 6

D. Non of these

760. If bxy = byx = r then ________________?
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A. 6x = 6y

B. 6x < 6y

C. Non of These

D. 6y < 6x