Statistics – Measures of Dispersion (Range, Mean Deviation)

Grade 11 Maths — Statistics – Measures of Dispersion (Range, Mean Deviation): 25 practice questions with instant scoring and explanations.

1. The range of a dataset is defined as:
2. For the dataset 2, 5, 8, 10, 15, the range is:
3. Mean deviation about the mean for a set of values is:
4. The formula for mean deviation about mean is:
5. For dataset 3, 5, 7, 9, 11, the mean is:
6. Mean deviation about median is given by:
7. For the data 1, 2, 3, 4, 5, the mean deviation about mean is:
8. Which measure is most easily affected by extreme values?
9. The range has a limitation that it:
10. Mean deviation is always:
11. For dataset 10, 20, 30, 40, 50, the range is:
12. The mean of 4, 8, 12, 16, 20 is:
13. Mean deviation from mean for 2, 4, 6, 8, 10 is:
14. In a distribution, if range increases:
15. The coefficient of mean deviation is:
16. For grouped data, class width is calculated as:
17. Mean deviation about mean from data 5, 10, 15 is:
18. If all values in a dataset are identical, the range is:
19. Deviations from mean always sum to:
20. Mean deviation of 1, 3, 5, 7, 9 about their mean is:
21. For the dataset with mean 50 and mean deviation 10, coefficient of MD is:
22. Which measure of dispersion uses all data values with weights?
23. Mean deviation is useful because it:
24. For a symmetric distribution about mean:
25. Quartile deviation equals: