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NCERT Class 11 Economics MCQ Chapter 6 Measures of Dispersion
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Measures of Dispersion
Chapter: 6
PART – (A) STATISTICS FOR ECONOMICS
MCQ
1. A good dispersion should have following characteristics except that:
(a) It should be rigidly defined.
(b) It should be simple to understand.
(c) It should lend itself for algebraic manipulation.
(d) It should be based on extreme values.
Ans: (d) It should be based on extreme values.
2. Absolute measures of dispersion are:
(a) Expressed in terms of the original unit of the series.
(b) Expressed in ratios or percentage, also known as coefficients of dispersion.
(c) Both of these.
(d) None of these.
Ans: (a) Expressed in terms of original unit of series.
3. The difference between highest and lowest value in a series is:
(a) Range.
(b) Quartile deviation.
(c) Mean deviation.
(d) Standard deviation.
Ans: (a) Range.
4. Which of the following measures of dispersion is quickest to calculate?
(a) Range.
(b) Standard deviation.
(c) Quartile deviation.
(d) Mean deviation.
Ans: (a) Range.
5. Find the range of the group of numbers:-10, -8, 1, 11, 19.
(a) 29
(b) 22
(c) 24
(d) 25
Ans: (a) 29
6. Semi-interquartile range is also known as:
(a) Standard deviation.
(b) Quartile deviation.
(c) Mean deviation.
(d) None of these.
Ans: (b) Quartile deviation.
7. Two quartiles needed for calculating quartile deviation are:
(a) Q₁ and Q₂
(b) Q₂ and Q₃
(c) Q₁ and Q₃
(d) None of these.
Ans: (c) Q₁ and Q₃
8. Dispersion based on only the central fifty percent of observations is called:
(a) Mean deviation.
(b) Quartile deviation.
(c) Standard deviation.
(d) Variance.
Ans: (b) Quartile deviation.
9. Mean deviation is minimum about:
(a) Mean.
(b) Median.
(c) Mode.
(d) First quartile.
Ans: (b) Median.
10. Measure of dispersion based on absolute deviation is called:
(a) Quartile deviation.
(b) Mean deviation.
(c) Standard deviation.
(d) Range.
Ans: (b) Mean deviation.
11. The measurement based on all the observations of the series is called:
(a) Range.
(b) Mean deviation.
(c) Quartile deviation.
(d) Standard deviation.
Ans: (d) Standard deviation.
12. The symbol o is used to represent:
(a) Quartile deviation.
(b) Variance.
(c) Mean deviation.
(d) Standard deviation.
Ans: (d) Standard deviation.
13. If the variance is 144, then value of standard deviation is:
(a) 13
(b) 144
(c) 14
(d) 12
Ans: (d) 12
14. Variance is the square root of ______________.
(a) Quartile deviation.
(b) Mean deviation.
(c) Range.
(d) Standard deviation.
Ans: (d) Standard deviation.
15. Relative measure of dispersion is:
(a) Coefficient of variation.
(b) Range.
(c) Quartile deviation.
(d) All of these.
Ans: (a) Coefficient of variation.
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