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Measures Of Variability Quiz 2 (25 MCQs)

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1. The measure of _____ is a way of describing how far spread out the data is.
2. Calculate the Mean Absolute Deviation 7, 9, 2, 7, 3, 5, 10
3. The data set below represents the different costs of a camera at an electronic store.$ 32, $ 47, $ 121, $ 96, $ 49, $ 81, $ 56What is the median of the first half of the data?
4. It is the square of the standard deviation and is also known as the mean square.
5. The most common used indicator of the degree of dispersion and is also the most dependable measure to estimate the variability in a total population.
6. The _____ is a measure of variability that represents the spread in data.
7. Describe how to find the mean of a data set.
8. What is the difference between the formulas for population variance and sample variance?
9. The IQR represents the middle _____ of the data.
10. Find the mean of these numbers:5, 5, 6, 6, 7, 8, 9, 9, 10, 10, 11
11. You are given a list of numbers with a median of 10. Each of the numbers is doubled. What will happen to the median of the second set of numbers?
12. It's the number you get when you add all the numbers together and then divide by the amount of numbers you have.
13. What measure of variability is used when only the two extreme values are considered?
14. The masses of six children are 34.5 kilograms, 42.6 kilograms, 39.8 kilograms, 40.1 kilograms, 53.4 kilograms, and 33.8 kilograms. Find the mean mass.
15. When you compute for the measure of variability of a set of scores and it turn out to be zero, which of these could be said of the scores?
16. Mrs. Rosenblatt's class has an average grade of 87. Later on she realizes she left out Joe's score. His grade was a 65. The new mean will, _____
17. Given the data:136, 150, 119, 151, 125, 140.Find the upper quartile (Q3).
18. Find the IQR (Q3-Q1) of the data20, 22, 25, 29, 31
19. Given this set of values:7, 7, 7, 7, 7, 7. What is the standard deviation?
20. Find the mean of 3, 7, 9, 9 12.
21. Find the range of the given data:16, 13, 3, 15, 14, 7, 10.
22. Which of the following is NOT a Measure of Variability?
23. Quartile 1 is the _____
24. What is the Q1 of this data set?6, 7, 2, 1, 5, 2, 1, 6
25. What is the mean of the data set:1, 8, 25, 30, 50, 72
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