Some students decided to measure the time spent helping at home by Year 9 and Year 10 students. They asked a sample of students to record the time they spent helping at home one night.
They displayed their results on this back-to-back stem-and-leaf graph.
Time spent helping at home (in minutes)
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| a) |
Redraw the graph putting the numbers within each stem in order.
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b)
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What was the least time spent helping at home by any of the students? __________ minutes
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| c) |
What was the median time spent helping at home by
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i)
ii)
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the 21 Year 9 students? __________ minutes
the 18 Year 10 students? __________ minutes
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