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Class 11 Economics (Statistics For Economics) Chapter 6 Measures Of Dispersion Quiz 3 (25 MCQs)

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1. Quartile Deviation for the data 1, 3, 4, 5, 6, 6, 10 is
2. All of the below sets have the same mean. Set 1-Standard Deviation=3.1 Set 2-Standard Deviation=4.9 Set 3-Standard Deviation=1.7 Set 4-Standard Deviation=3.2 Which set of data probably has the points farthest to the mean?
3. 6. The arithmetic average of the absolute deviation of a series known as the .....
4. If the variance of a distribution is 169, then what is the standard deviation of the same distribution?
5. Four data sets are shown below. Set 1:\{19, 19, 19, 19, 19\} Set 2:\{5, 10, 15, 20, 25\} Set 3:\{9, 10, 11, 12, 13\} Set 4:\{5, 20, 28, 36, 51\} Which data set has the largest standard deviation?
6. Find the Mean Absolute Deviation of the set:10, 5, 7, 14, 19, 32, 25
7. Explain quartile deviation.
8. Standard deviataion is usually used to compare two sets of data. If the value of the standard deviation is very small the data is more
9. 9, 9, 10, 12, 12, 15, 17, 19, 20, 26, 21, 24, 30Find the D$_{7 }$score.
10. In a population of five university students with GPAs of 2.5, 2.3, 1.7, 1.4, and 1.1, a sample of three students are considered. What would be a sample that would underestimate the population standard deviation?
11. Find the lower quartile of the following set of scores. 12, 9, 4, 6, 5, 8, 9, 4, 10, 2
12. If each item is reduced by 10, Range is
13. If the data is skewed to the right, which measure of central tendency would best to describe the data?
14. What is the sample median and IQR for the following data:15, 21, 24, 16, 71, 18
15. A(n) ..... of a data set is much greater or much less than the other data values.
16. What is the most simple measure of variability?
17. The relative measure of dispersion is .....
18. Which set of data has the largest range?
19. The median and the Mean deviation about the median for following valuesi 3ii 11iii 4iv 7v 5is .....
20. What is the formula for calculating the range?
21. As x increases, y decreases.
22. Which of the following is least affected by the extreme values of the observation in the data set
23. Which of the following is a characteristic of the mean deviation?
24. Study of scatteredness of observations is known as .....
25. If the standard deviation of a data set is 17, then what is the standard deviation of the same data set?
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