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Class 11 Economics (Statistics For Economics) Chapter 6 Measures Of Dispersion Quiz 6 (24 MCQs)

Quiz Instructions

Select an option to see the correct answer instantly.

1. What is the quartile deviation?

Correct Answer: C) A measure of variability.

2. Which of the following is a relative measure of dispersion?

Correct Answer: D) Coefficient of Variation.

3. Standard de3viataion is usually used to compare two sets of data. If the value of the standard deviation is very small the data is more

Correct Answer: B) Consistent.

4. Find the interquartile range for this set of data 1 3 4 6 7 9 11

Correct Answer: C) 6.

5. If the mean is consistent across all sets, which set of data exhibits values that are closer to the mean value, considering their respective standard deviations?Set 1:Standard deviation = 15.9Set 2:Standard deviation = 14.64Set 3:Standard deviation = 17.88Which set displays values that are relatively closer to the mean, given their standard deviations?

Correct Answer: B) Set 2.

6. Which of the following are the merits of SD?

Correct Answer: D) All are correct.

7. Which among the following is NOT true about the measures of variation?

Correct Answer: D) It does not tell us that the scores are compressed or spread out.

8. If the value of Coefficient of variation is more, the consitency of the data is

Correct Answer: B) Less.

9. Standard deviation is always .....

Correct Answer: B) Positive.

10. The class interval X-55 has a midpoint of 52. State the value of X.

Correct Answer: C) 49.

11. What does a high variance value indicate about the data set?

Correct Answer: B) Large variability within the dataset.

12. Which measure is used to find the middle 50% of a data set?

Correct Answer: D) Interquartile range.

13. If sample A has a standard deviation of 10 and sample B has a standard deviation of 2, which sample has the larger spread of values?

Correct Answer: A) Sample A.

14. Percentage of data for each level

Correct Answer: C) Relative frequency.

15. What is the standard deviation for the data given:\{12, 13, 29, 18, 61, 35, 21\}

Correct Answer: C) 17.14.

16. The variance of a set of data is 18. Find the new variance if each value in the set of the data is substracted by 5 and the divided by 3.

Correct Answer: A) 2.

17. Why is median also known as the 50th percentile?

Correct Answer: B) The median is also known as the 50th percentile because it divides the dataset into two equal parts.

18. The standard deviation describes the spread about which of the following?

Correct Answer: C) Mean.

19. What is the primary use of standard deviation?

Correct Answer: B) To measure the spread of data points.

20. The Mean Deviation is the least from the

Correct Answer: B) Median.

21. If two data sets have the same mean, then these sets have the same standard deviations.

Correct Answer: B) False.

22. What does variance represent?

Correct Answer: C) How spread out each data value is from the mean.

23. The Variance of a data is 2.5. Find the new variance if each data is multiplied by 3.

Correct Answer: A) 22.5.

24. Which measure of central tendency is needed to solve the variance of a distribution?

Correct Answer: A) Mean.

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