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Class 11 Economics (Statistics For Economics) Chapter 5 Measures Of Central Tendency Quiz 4 (25 MCQs)

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1. The data shows the test scores of four different classes.Algebra:\{87, 91, 64, 88, 74\}Geometry:\{98, 86, 84, 91, 79\}Statistics:\{87, 72, 84, 88, 91\}Pre-Algebra:\{63, 82, 78, 71, 74\}Which class had the smallest interquartile range?
2. Fredericka scored 75%, 63%, 82%, and 80% on four test. What score does she need on the next test for her average grade to be 78%?
3. What is the median?22, 14, 33, 22, 12, 14, 12
4. What is the mean of a data set?
5. A man travels at a speed of 20 km/hr & then returns ata speed of 30 km/ hr. His average speed of journey is:
6. What is the Q3 of this data set?6, 7, 2, 1, 5, 2, 1, 6
7. The median of 0, 2, 2, 2, -3, 5, -1, 5, 5, -3, 6, 6, 5, 6
8. -5(-x + 3)
9. The points scored in each game by Darby Middle School's football team are 21, 35, 14, 17, 28, 14, 7, 21, and 14. If they score 9 points on there next game, how will it effect the mean?
10. Alfonso plays basketball on a team. He has played three games so far. In the first game, he scored 10 points. In the second game, he scored 16 points. In the third game, he scored 7 points. What is Alfonso's average points per game?
11. 42, 25, 31, 37, 46, 29, 38What is the interquartile range of the data?
12. Find x if 5, 9, 11, 12, 13, 14, 17 and x have a mean of 12.
13. Statistical questions have ..... possible answers.
14. At Donald's Donuts the number of donut holes in a bag can vary. Help Donald find the MODE.12, 10, 10, 10, 13, 12, 11, 13, 10
15. The data below represents the number of canoes rented each month from May through October. Find the mean absolute deviation. Round to the nearest hundredth.\{15, 29, 36, 45, 31, 12\}
16. What is the median of the following numbers:10, 9, 9, 8, 7, 6, 5, 4, 3
17. This measure of center is calculated by adding all of the data set together and then dividing by the number of data points in the set.
18. The relation between mean, median and mode is:
19. The number of miles that Kiki cycled each week for a 7-week period is shown:36, 42, 28, 52, 48, 36, 31 What is the median number of miles Kiki cycled?
20. Grace has 5 cats that are 5, 2, 7, 6, and 3 years old. If she gets a new cat that is 5 years old, how will that effect the median age of the cats?
21. What effect will the outlier have on the median of the data if the outlier is excluded? 2, 2, 2, 2, 8, 2, 24
22. The mean of a dataset is 15. If one observation of value 25 is added to the dataset, what will be the new mean?
23. If the mean of a dataset is 50 and the median is 45, what can be said about the skewness of the dataset?
24. What measure represents the value that repeats the most
25. Harley surveyed his classmates about how many siblings they have and got the following data:0, 1, 3, 5, 4, 2, 2, 9, 1, 2, 0, 1, 1, 1, 1, 3 Which measure is best measure of center of the data?
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