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Grades 6, 7 and 8 - Math - Middle School - Data Handling - Averages
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Avg score: 50% • Most missed: “The mean of the first 9 calls is 5 minutes. The next call takes 10 minutes. What…”

Mean and mode are two types of averages found in data handling. The three averages are:  mean, mode and median - which can be used in different situations. An average is a typical or representative value of a data set. Look at how the data is spread out or distributed around some sort of average.

Grades 6, 7 and 8 - Math - Middle School - Data Handling - Averages
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20 Questions

1. The mean of the first 9 calls is 5 minutes. The next call takes 10 minutes. What is the mean of the first 10 calls?
2. Which averages could best represent this set of data?
3. Of 20 customers at a vending machine, 8 spent 50p, 5 spent 60p, 4 spent 75p and 3 spent £1. What was the total amount spent?
4. In a set of 20 data values in ascending order, the 10th is 22 and the 11th is 24. What is the median?
5. A small range of values indicates a .......
6. Three more children completed the jigsaw. Their times were 8, 10 and 24 mins. What is the median now?
7. Six children recorded their times (in minutes) to do a jigsaw: 12, 10, 15, 19, 11, 17. What is the range of these times?
8. To find the mean of a data set, add up all values then divide by the .......
9. To find the mean of a data set, add up all values then divide by the .......
10. If there is an even number of values in the ordered set, the median is .......
11. In a set of 20 data values in ascending order, the 10th is 22 and the 11th is 24. What is the median?
12. A small range of values indicates a .......
13. What is the modal amount spent by these 20 customers?
14. What is the mean amount spent by the 20 vending machine customers?
15. Of 20 customers at a vending machine, 8 spent 50p, 5 spent 60p, 4 spent 75p and 3 spent £1. What was the total amount spent?
16. The one extra large value in the set is called an .......
17. What is the median of this data?
18. The mean length of calls to a help desk is 3 minutes. If the advisers take 1,000 calls, how much time do they spend on the 'phone?
19. Which averages could best represent this set of data?
20. The mean length of calls to a help desk is 3 minutes. If the advisers take 1,000 calls, how much time do they spend on the 'phone?

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