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Class 11 Economics MCQ Chapter 15 Measures of Dispersion
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Measures of Dispersion
Chapter: 15
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. Which of the following is a unitless measure of dispersion?
(a) Standard deviation.
(b) Coefficient of variation.
(c) All of the above.
(d) None of the above.
Ans: (b) Coefficient of variation
3. 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.
4. The interquartile range is:
(a) The difference between Q₁ and Q₂
(b) The sum of Q₁ and Q₃
(c) The difference between Q₁ and Q₃
(d) Half of the range.
Ans: (c) The difference between Q₁ and Q₃
5. 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.
6. Name the graphical method which helps us investigate the dispersion?
(a) Kinked Curve method.
(b) Mean deviation.
(c) Standard deviation.
(d) Lorenz Curve method.
Ans: (d) Lorenz Curve method.
7. 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.
8. If each observation of a set of 50 observations with a standard deviation of 8 is multiplied by 2, then the new standard deviation will be:
(a) 4
(b) 16
(c) 20
(d) None of the above.
Ans: (b) 16
9. Find the range of the group of numbers:-10, -8, 1, 11, 19.
(a) 29
(b) 22
(c) 24
(d) 25
Ans: (a) 29
10. If the first quartile is 104 and the quartile deviation is 8, then the third quartile is:
(a) 136
(b) 146
(c) 120
(d) 130
Ans: (c) 120
11. Which of these is the merit of standard deviation?
(a) Standard deviation is based on all values of the series.
(b) In the estimation of standard deviation, more importance is given to difficult and extreme value.
(c) All of the above.
(d) None of the above.
Ans: (a) Standard deviation is based on all values of the series.
12. Which one is difficult to compute?
(a) Relative measures of dispersion.
(b) Absolute measures of dispersion.
(c) None of the above.
(d) All of the above.
Ans: (a) Relative measures of dispersion.
13. 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
14. The standard deviation of the first 60 natural numbers is:
(a) 10.43
(b) 17.32
(c) 13.43
(d) 15.43
Ans: (b) 17.32
15. 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.
