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# Cumulative Frequency (BCD). 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.

## Presentation on theme: "Cumulative Frequency (BCD). 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."— Presentation transcript:

Cumulative Frequency (BCD)

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

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

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

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

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

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.

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

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

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.

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

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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