Averages and charts
Grade 8: mean, median, mode, range, read bar and pie charts.
Free to play. Teams answer on one screen; your phone is the remote. No student devices.
Questions
What is the mean of 4, 6, 8, 10 and 7?
- 6
- 7
- 8
- 9
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7The mean of five numbers is 12. What is the total of the five numbers? (Answer out loud)
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60Four numbers have a mean of 10. A fifth number, 20, is added. What is the new mean?
- 11
- 12
- 14
- 15
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12What is the median of 3, 9, 1, 7 and 5?
- 1
- 5
- 7
- 9
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5What is the median of 2, 4, 6 and 12? (Answer out loud)
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5The median of 1, 2, 3, 4 and 100 is 3. (True or false?)
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TrueWhat is the mode of 2, 5, 3, 5, 7, 2, 5?
- 2
- 3
- 5
- 7
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5A data set can have more than one mode. (True or false?)
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TrueFor the data 3, 4, 4, 6, 6, 9, which statement about the mode is correct?
- The modes are 4 and 6
- The only mode is 4
- The only mode is 6
- There is no mode
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The modes are 4 and 6What is the range of 12, 7, 19, 4 and 15?
- 11
- 12
- 15
- 19
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15The range of a data set can be a negative number. (True or false?)
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FalseA data set has a range of 14 and its smallest value is 6. What is its largest value? (Answer out loud)
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20In a pie chart, which angle represents 25% of the data?
- 180°
- 25°
- 45°
- 90°
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90°A pie chart shows 72 students. One sector is 150°. How many students is that?
- 21
- 25
- 30
- 36
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30A bar chart shows books read: Ann 6, Ben 9, Cy 3. How many more did Ben read than Cy?
- 12
- 3
- 6
- 9
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6Four bars show goals scored: 3, 8, 8 and 5. What is the mean height of the bars?
- 5
- 6
- 6.5
- 8
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6