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Published byKenyon Lumpkins Modified over 2 years ago

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Cumulative Frequency (BCD)

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A B C D Q1. Find the median of the following set of numbers: 5, 3, 6, 9, 1, 5, 2, 3, 7. 1 5 4 3

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A B C D Q2. Find the median of this set of numbers: 2, 5, 1, 3, 7, 9, 12, 1. 5 12 3.5 4

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A B C D Q3. Find the interquartile range of this data:1, 3, 4, 7, 7, 9, 10 4.5 7 6 9

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True False Q4. The table is correctly completed to show the cumulative frequency of the data. TimeNumberC.F. 08 00 -23 10 00 -3861 12 00 -59120 14 00 -65185 16 00 -25210 18 00 -38248

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A B C D 155 hours 175 hours 50 hours 60 hours Q5. Estimate the median life span of the batch of light bulbs.

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A B C D 112 hours 182 hours 70 hours 155 hours Q6. Estimate the interquartile range from the graph. There are 100 light bulbs in the sample.

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True False Q7. Is the cumulative frequency polygon drawn correctly? TimeNumberC.F. 08 00 -23 10 00 -3861 12 00 -59120 14 00 -65185 16 00 -25210 18 00 -38248

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A B C D 5 50 10 1 Q8. How many boys are taller than the tallest girl?

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A B C D 15, 12 & 10.4 16.6, 13 & 10.4 16.6, 12 & 2.6 15, 12 & 4.6 Q9. Find the largest value, the median and the interquartile range from the box plot.

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A B C D Q10. What does the ‘box’ in a box plot represent? Median Interquartile range Quartiles Range

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Answers 1. b 2. d 3. a 4. True 5. 155 hours 6. c 7. False 8. d 9. c 10.b

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