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Statistics Practice Test Questions: Measures of Dispersion
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Statistics Practice Test Questions: Measures of Dispersion
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25 Questions

1. The mean deviation is minimum when deviations are taken from____________
2. The measure of dispersion which is expressed in terms of the nits of observations__________
3. The standard deviation one distribution divided by the mean of the distribution and expressing in percentage is called_____________
4. Which of the following is an absolute measure of dispersion?___________
5. The average of squared deviations about the arithmetic mean for a set of numbers is called___________
6. The range of the scores 29, 3, 143, 27, 99 is_____________
7. The range of the values -5, -8, -10, 0, 6, 10 is___________
8. The average of squared deviations from mean is called_____________
9. The standard deviation is independent of_____________
10. Which of the following measures of dispersion is expressed in the same units as the units of observation?__________
11. Half of the difference between upper and lower quartiles is called___________
12. The arithmetic average of the absolute deviation of a series known as the________
13. The measures of dispersion can never be__________
14. The measurements of spread or scatter of the individual values around the central point is called________
15. If the observations of a variable X are, -4, -20, -30, -44 and -36, then the value of the range will be_________
16. Which measure of dispersion can be computed in case of opened classes?___________
17. The measures used to calculate the variation present among the observations in the unit of the variable is called___________
18. The measure of dispersion which uses only two observations is called___________-
19. If the difference of the third and first quartiles is divided by the sum of the third and first quartiles then it is known as __________
20. The mean deviation of the scores 12, 15, 18 is_____________
21. Study of scatteredness of observations is known as ________
22. Which of the following is a unit free quantity___________
23. The measures used to calculate the variation present among the observations relative to their average is called_______
24. In quality control of manufactured items, the most common measure of dispersion is___________
25. The measure of dispersion which uses only two observations is called__________

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