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Box and Whisker Plots

Box and Whisker Plots. Lesson 7-2. box-and-whisker plot- uses a number line to show the distribution of a set of data. 24, 32, 35, 18, 20, 36, 12 12, 18, 20, 24, 32, 35, 36. Set of data. List the numbers in order from least to greatest. upper extreme- Largest value. lower extreme-

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Box and Whisker Plots

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  1. Box and Whisker Plots Lesson 7-2

  2. box-and-whisker plot- uses a number line to show the distribution of a set of data 24, 32, 35, 18, 20, 36, 12 12, 18, 20, 24, 32, 35, 36 Set of data List the numbers in order from least to greatest upper extreme- Largest value lower extreme- smallest value median- middle value lower quartile- half way between the lower extreme and the median upper quartile- half way between the upper extreme and the median 18 + 20 2 32 + 35 2 67 2 38 2 = 33.5 = = 19 =

  3. 12, 18, 20, 24, 32, 35, 36 33.5 19

  4. Example 220, 18, 25, 22, 32, 30, 29, 35, 30, 28, 24, 38 18, 20, 22, 24, 25, 28, 29, 30, 30, 32, 35, 38 upper quartile lower extreme lower quartile upper extreme median- 28.5

  5. Interpreting box-and-whisker plots upper quartile lower quartile upper extreme lower extreme median What is the median time spent in the lab? 360 hours What are the greatest and least amounts of time spent in the lab? 460 hours 320 hours 140 hours What is the range of time spent in the lab? 460- 320 = 140

  6. 25% 25% 25% 25%

  7. 15 minutes 1 inch

  8. 5 20 25 10 15 25 minutes

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