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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 measurements of spread or scatter of the individual values around the central point is called________
2. The measures used to calculate the variation present among the observations in the unit of the variable is called___________
3. If there are ten values each equal to 10, then standard deviation of these values is___________
4. The value of standard deviation changes by a change of__________
5. If all the scores on examination cluster around the mean, the dispersion is said to be________
6. If there are many extreme scores on all examination, the dispersion is____________
7. The range of the scores 29, 3, 143, 27, 99 is_____________
8. The degree to which numerical data tend to spread about an average value called________
9. The measures used to calculate the variation present among the observations relative to their average is called_______
10. The scatter in a series of values about the average is called___________
11. Mean deviation computed from a set of data is always____________
12. The variance is zero only if all observations are the___________
13. The sum of absolute deviations is minimum if these deviations are taken from the_____________
14. In quality control of manufactured items, the most common measure of dispersion is___________
15. If the difference of the third and first quartile is divided by the sum of the third and first quartile then it is known as__________
16. 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 __________
17. Standard deviation of first 50 natural number is__________
18. The measure of dispersion which uses only two observations is called__________
19. Which of the following is an absolute measure of dispersion?___________
20. The average of the squared deviations about the arithmetic mean for a set of numbers is__________
21. The measure of dispersion which is expressed in terms of the units of the observations I called________ Absolute measure
22. Which measure of dispersion has a different unit other than the unit of measurement of values________
23. Calculate coefficient of variation c)V.) for the following data 2,4,8,6,10 and 12 is____________
24. Study of scatteredness of observations is known as ________
25. Which of the following is a unit free quantity___________