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Class 11 Economics (Statistics For Economics) Chapter 6 Measures Of Dispersion Quiz 2 (25 MCQs)

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1. In a set of 100 data values, the mean is 29 with a standard deviation of 3, what is the range of data values within one standard deviation of the mean?
2. What does the range in statistics measure?
3. What is a demerit of the standard deviation?
4. What does the term 'coefficient of variation' refer to?
5. State the midpoint of the class interval (3.8-5.2).
6. If the variance of a data set is 30.25, what is the standard deviation?
7. Which of the following is NOT a measure of dispersement?
8. Coefficient of standard deviation is the ratio of .....
9. The mean of a set of numbers p, 2p, 3p, 4p and 5p is 6. Calculate the standard deviation of the set of numbers.
10. What does a low coefficient of variation indicate?
11. Chebyshev's Theorem states that regardless the shape of the distribution, at least $1-\frac{1}{k^2}$
12. Mean deviation is calculated based on which of the following?
13. Given the following scores, 15, 12, 2, 3, 5, 11, 23, 24, 45, 32, 33:What is the range?
14. If the dispersion is small, then the values in the distribution is close to the median.
15. The masses of six children are 34.5 kilograms, 42.6 kilograms, 39.8 kilograms, 40.1 kilograms, 53.4 kilograms, and 33.8 kilograms. Find the mean mass.
16. The ..... is the easiest measure of dispersion to calculate.
17. Which of the measures of dispersion only uses two values in the distribution?
18. What is the formula to calculate the range?
19. Quartile Deviation is based on ..... of the observation.
20. If each number in a set of data is added or substracted with a constant, the range, interquartile range, variance and standard deviation also will change.
21. QD is based on the ..... items
22. Difference between the max and min
23. What does a distribution with a high value of standard deviation imply?
24. The Empirical Rule says that 95% of the observations in a distribution will lie within plus and minus two standard deviations of the mean.
25. Define the first quartile in statistics.
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