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Measures Of Dispersion Quiz 1 (25 MCQs)

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1. It is defined as the square root of the variance.

2. When calculating variance, what do you do?

3. If the variance of a data set is 30.25, what is the standard deviation?

4. Dispersion measures

5. 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

6. Which of the following is not a measure of dispersion?

7. Which measure of center best represents this set of data?12, 13, 11, 16, 31, 14, 10, 15

8. _____ is the tool of measure of the variation of the items.

9. Calculate Standard Deviation

10. The interquartile range of a set of data is 18. Find the new interquartile range if each value in the set of data is multiplied by 4.

11. Order the data and find the Q12, 3, 3, 3, 4, 4, 4, 5, 5, 5, 5, 6, 6, 6, 6, 6, 7, 7, 8, 8, 8, 9, 9

12. What is the first step when calculating the Mean Absolute Deviation?

13. If a number is added to the set that is near the mean, how does this affect standard deviation?

14. Which measure of central tendency would be the least appropriate to calculate if there are extreme scores?

15. Find the median:5, 6, 3, 9, 0, 4, 1, 2, 7

16. A(n) _____ of a data set is much greater or much less than the other data values.

17. What is standard deviation?

18. Ms. Rork's class had a range of test grades from 78 to 97. She forgot to add in a student who got an 80% on the test. How will this affect the range?

19. For the data set below, which of the following measures is greatest?\{20, 25 30, 31, 32, 45, 45, 80\}

20. To find the interquartile range (IQR) _____

21. The most commonly used measure of dispersion is

22. True or FalseTo find the IQR (interquartile range) you have to add the Q3 + Q1.

23. Which of the following is a measure of spread (dispersion)?

24. Four data sets are shown below.Set 1:\{10, 19, 38, 50, 51\}Set 2:\{5, 21, 26, 39, 51\}Set 3:\{9, 38, 50, 50, 51\}Set 4:\{5, 28, 28, 28, 51\}Which data set has the largest standard deviation?

25. If a number is added to the set that is in the middle of the data, how does this affect the range?

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Measures Of Dispersion Quiz 1 (25 MCQs)

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