measures of dispersion Mcqs
1. If Skewed distribution the three averages mean, median and mode are ________?
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A. Identical

B. None of these

C. Different

D. Zero

2. The ________ in the distribution around which the observation to lie?
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A. Central value

B. Manner

C. Mean

D. Dispersion

3. Relative measure of skewness was introduced by _____________?
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A. Mode

B. Lack

C. Karl Person

D. Rowely

4. If the standard deviation of the values 2,4,6,8 is 2.33, then the standard deviation of the values 4,6,8,10 is_____________?
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A. 4.66

B. 2.58

C. 2.33

D. 0

5. Mean deviation is equal to 4/5 of the _________ manipulation?
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A. Variance

B. Quartile deviation

C. Standard deviation

D. Range

6. The mean deviation of the values, 18, 12, 15, is_______________?
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A. 6

B. 3

C. 2

D. Zero

7. Lowest value of variance can be____________?
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A. 0

B. 3

C. -1

D. 1

8. In symmetrical distribution, the co-efficient of skewness is equal to ______________?
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A. None of these

B. 0

C. 1

D. -1

9. The second moment about mean is _____?
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A. S.D.

B. Mode

C. Mean

D. Variance

10. The lack of uniformity is called ______________?
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A. variation

B. Lack

C. Skewness

D. X= 5

11. If y= ax + b the S.D. of y is _______________?
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A. Minimum

B. S.D. of x

C. Mean Deviation of x

D. Maximum

12. Range of 5,5,5,5, is ________________?
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A. None of these

B. 5

C. 0

D. 25

13. The standard deviation is affected by the value of every____________?
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A. Observation

B. Relative Dispersion

C. Items

D. Absolute

14. The frequency distribution mean > Median > Mode is called __________?
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A. +vely

B. Symmetrical

C. One

D. Negatively

15. First moment about origin is always equal to _______________?
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A. variance

B. None of these

C. A.M.

D. Zero
16. If third moment about mean is equal to zero, then distribution is ______________?
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A. positively skewed

B. None of these

C. Negatively skewed

D. Symmetrical
17. The S.D. and variance are ____ of origine?
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A. Multiplied

B. Independent

C. Variance

D. Change

18. Mean deviation =______ S.D?
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A. 5-Jun

B. 3-Feb

C. 4/5

D. 6-May

19. suppose for 40 observation, the variance is 50. If all the observation are increased by 20, the variance of these increased observation will be_________?
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A. 50

B. 70

C. 50-20=30

D. 50/20

20. The shape of the symmetrical distribution is _______?
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A. None of these

B. U- Shaped

C. Bell- Shaped

D. J- Shaped

21. __________ of the distribution which is measured relative to the distribution known as Normal?
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A. Normal

B. Skewed

C. Flatness

D. Moment

22. ________ is the simplest means of dispersion?
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A. Standard deviation

B. C.V.

C. Variation

D. Range
23. If variance iv standard deviation is minimum if the deviation taken from______________?
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A. Mode

B. Mean

C. Average

D. G.M.

24. Standard deviation is always calculated from _____________?
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A. G.M.

B. Mean

C. Mode

D. Median

25. If y = bx + a the mean deviation of y is_____________?
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A. M.D.of x

B. S.D. of x

C. S.D. of y

D. var (x)

26. which is poor measure of dispersion in open-end distribution ________________?
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A. Range

B. None of these

C. Semi-inter quartile range

D. Quartile- deviation

27. Absolute sum of deviations is minimum from _______________?
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A. Mean

B. S.D. of x

C. Normal

D. Coefficient of variance

28. The sum of powers of deviation from mean is zero is called __________?
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A. Normal

B. Lack

C. Mean

D. Skewed

29. The degree to which numerical data tend to spread about an average value is a________________?
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A. Dispersion

B. Range

C. Minimum

D. variance

30. If Y=-8X 5 and SD of X is 3, then SD of Y is______________?
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A. 24

B. 3

C. 8

D. None of these

31. Mean deviation is always ________________?
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A. Negative

B. More than S.D.

C. Less than S.D.

D. Equal to S.D.

32. The value of interval x S include _______________?
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A. 68.27%

B. 99.73%

C. 95.45%

D. 49.45%

33. If all values are same then the measure of dispersion will be?
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A. Median

B. Mode

C. Mean

D. 1

E. 0
34. Second moment about mean is always equal to _____________?
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A. S.D.

B. Square

C. Variance

D. C.V.

35. The A.M. is greater than mode is equal to ______________?
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A. Negatively

B. zero

C. Skewness

D. +vely
36. Check the consistency used _____________?
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A. Coefficient of variance

B. Coefficient of dispersion

C. Q.D.

D. Mean coefficient

37. The measure of relative dispersion is called __________________?
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A. Quartile deviation

B. Coefficient of quartile Deviation

C. Mean coefficient

D. Mean dervation

38. The variance of 4,4,4,4,4,4 is _______________?
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A. (4)2

B. 4

C. None of these

D. 8

39. The sum of the squares of deviations is the least when measured from____________?
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A. Mode

B. G.M.

C. A.M.

D. Median

40. Mean deviation, Variance and Standard Deviation of the values 4,4,4,4,4,4 is_______________?
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A. 2

B. 8

C. 0

D. 4

41. First movement about mean is always equal to ___________?
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A. Zero

B. 1

C. None of these

D. S.D.

42. If y= bx + c the range of y is ________?
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A. Range of x

B. Range of P

C. Zero

D. Quartile of X
43. Quartile deviation is not capable of manipulation______________?
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A. Algebraic

B. Easy

C. Abjectly

D. mathematically

44. In a symmetrical distribution mean, median and mode, _________________?
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A. Less than

B. Greater

C. Coincide

D. Positive

45. The sum of absolute deviations from median is _____?
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A. Zero

B. Positive

C. Least

D. None of these

46. The variance of 5 numbers is 10. If each number is divided by 2, then variance of new number is_____________?
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A. 5

B. 2.5

C. 20

D. 0

47. The correct variance is define as the __________________?
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A. varies of data P2/6

B. M.D. of data h2/6

C. S.D. of data h2/12

D. Variance of data h2/12
48. In grouped data, the range is the difference between ________________?
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A. Two extreme class limits

B. None of these

C. Two extreme class boundaries

D. Two extreme class frequency

49. Variance remains unchanged by change of_____________?
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A. Both

B. Scale

C. None of these

D. Origin