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anonymous

  • one year ago

Help for a medal and fan?

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  1. anonymous
    • one year ago
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    The heights, in cm, of some plants in a greenhouse are shown below: 13.5, 12.2, 12.8, 12.8, 12.3, 12, 13.9, 14, 14.2, 12.6 Jack made the following box plot to represent the heights:

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  2. anonymous
    • one year ago
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    Which of the following did Jack show incorrectly on his box plot? Median Minimum First quartile Third quartile

  3. jim_thompson5910
    • one year ago
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    First sort the numbers from smallest to biggest 12, 12.2, 12.3, 12.6, 12.8, 12.8, 13.5, 13.9, 14, 14.2 which is the middle-most number?

  4. anonymous
    • one year ago
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    The middle most number would be 12.8

  5. jim_thompson5910
    • one year ago
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    correct, that's the median notice how there is a line over the 12.8 and this line corresponds to the median since it's in the inside of the box that means Jack has the right median and plotted it correctly

  6. jim_thompson5910
    • one year ago
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    focus on the first half (ie first 5 values) 12, 12.2, 12.3, 12.6, 12.8 what is the median here?

  7. anonymous
    • one year ago
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    12.3

  8. jim_thompson5910
    • one year ago
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    good this is where Jack messes up because he placed the left edge of the box over 12.5 when it should be over 12.3

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  9. jim_thompson5910
    • one year ago
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    focus on the second half of the data 12.8, 13.5, 13.9, 14, 14.2 what is the median here?

  10. anonymous
    • one year ago
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    The median would be 13.9

  11. jim_thompson5910
    • one year ago
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    so that is Q3 Jack marked that value correctly since the right edge of the box is over 13.9

  12. jim_thompson5910
    • one year ago
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    and finally, the min is indeed 12 since that is the smallest number so Jack plotted the min correctly as well

  13. anonymous
    • one year ago
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    So the answer would be first quartile then?

  14. jim_thompson5910
    • one year ago
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    yes

  15. anonymous
    • one year ago
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    Alright, thank you so much for your help!

  16. jim_thompson5910
    • one year ago
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    you're welcome

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