statistics MCQs – Page 16

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 Review each marked answer and report any item that may be outdated or unclear.

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

761. Richness is not a ________________?
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A. Continuous

B. Discreade

C. Variable

D. Constant

762. If (AB) >(A) (B)/n __________ then A and B are?
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A. Independent

B. Dis-associated

C. None of these

D. Associated
763. ?xy is always equal to_____________?
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A. ?x

B. #NAME?

C. ?yx

D. ?o2

764. In perfect association the value of coefficient of association is ______________?
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A. non of these

B. +1

C. -1

D. 0

765. In r x c table for test of Independence the degree of freedom is _____________?
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A. (r -1) (c -1)

B. r + c

C. ? r c ?

D. rc

766. If r, between u = x and y = -x is _______________?
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A. 0

B. -1

C. Non of these

D. 1

767. (A ? C) is a frequency of attributes of order_______________?
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A. -2

B. 1

D. 3
768. The table representing two attributes is called________________?
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A. Dichotomy table

B. Chi-square table

C. Random table

D. Contingency table
769. Two attributes are associated if expected frequency is ____________________?
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A. Greater than observed

B. Less than observed

C. Equal to observed

D. None of these

770. Correlation coefficient is ___________ with respect to x and y?
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A. Non-normal

B. #NAME?

C. Symmetrical

D. Skewed

771. In Normal distribution, the parameter which controls the flatness of the curve is____________?
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A. ,?

B. None

C. , MD

D. 2??,e

772. Which of the following parameter control the relative flatness of normal distribution?
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A. Standard Deviation

B. Mean

C. None

D. Mode

773. We use normal distribution when n is________________?
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A. Large

B. None

C. Small

D. Fixed

774. The shape of normal curve depends upon ?
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A. Mean Deviation

B. Standard Deviation

C. None

D. Mean

E. Quartile

775. For +ve and -ve skewed, check the sign of _______?
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A. ?2

B. ?1

C. 3

D. 2

776. Area Under the normal curve on either side of mean is _____________?
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A. -1

B. Mean value

C. 2

D. 0.5

E. 1

777. The lower and upper quartile of standard normal variation are respectively ?
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A. -0.7979 and 0.7979

B. -0.7979? and 0.7979?

C. +0.6745? and -0.6745?

D. -0.6745 and 0.6745
778. In a normal distribution E(X-)2 is________________?
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A. Quartile Deviation

B. Variance

C. Mean Deviation

D. Standard Deviation

779. Area to the right of (z=0) is the area for ____ values of z?
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A. Positive

B. None of these

C. Zero

D. Negative

780. In a certain normal distribution having = 35 and variance = 16, then mode will be_______________?
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A. 16

B. 3.5

C. 4

D. None of these

781. In case of symmetrical distribution?
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A. 1=2

B. ?1=?4

C. Mean=Mode=Median

D. 1=4

782. Every distribution tends to ____ distribution?
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A. ?

B. Small

C. Large

D. Finite

783. If n ? 30 and _____ then binomial approaches to normal distribution?
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A. p = n

B. pq

C. p = q

D. q/p

784. Standard normal variable Z is___________?
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A. ? x/

B. - x /?

C. x ?/

D. x /?
785. In a normal distribution, what is the z score associated with the mode ?
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A. -1

B. 0

C. 1

D. None of these

786. Total area under the normal curve is________?
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A. 50%

B. 100

C. 1%

D. 1
787. Total Area under the normal curve is_______________?
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A. 1

B. Less than 1

C. None

D. Greater than 1

E. 0

788. The median of normal distribution corresponds to the value of Z equal to_________________?
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A. 1

B. 0

C. 0.5

D.
789. If X N(55,49) then ? ?
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A. 55

B. 7

C. 104

D. 49

790. If X is normally distribution with >= 8 and S.D. 4, then P(6?X?10) may be______________?
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A. -0.32

B. 0

C. 1.2

D. 0.2684
791. Normal distribution is _____ distribution?
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A. #NAME?

B. #NAME?

C. Symmetrical

D. non-symmetrical

792. The Normal Curve is asymptotic to the?
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A. Along Y=X

B. Y-axis

C. None

D. X-axis
793. If X N (, ?2) then Z __________?
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A. N(0, 1)

B. N(1, 1)

C. N(0, ?2)

D. N(1, ?2)

794. In normal distribution, mean ______= Mode?
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A. S.D.

B. Mean deviation

C. Median

D. Quartile

795. The standardized normal variate z means_________ away from the mean?
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A. Mean

B. S.D.

C. Variance

D. None of these

796. Normal distribution is the distribution of _______________?
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A. Continuous r.v.

B. Discrete r.v.

C. Quantitative variable

D. Qualitative variable

797. The _____ order moments about mean are all zero?
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A. None

B. Even

C. Four

D. Add
798. If Y=5X + 10 and X is N(10,25), then mean of Y is ?
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A. 70

B. 60

C. 50

D. 135

799. If X N(16,49), the mean is___________?
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A. 49

B. 7

C. 16

D. 4

800. In a normal distribution quartile deviation is _______ (S.D.)?
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A. 0.2745

B. 0.79079

C. 0.3789

D. .6745