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# Histograms Using a histogram to estimate the median PowerPoint Presentation, PPT - DocSlides

trish-goza | 2018-02-10 | General
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Mark. 0 –20. 20 –30. 30 –35. 35 –45. 45 –55. 55 –70. Frequency. 9. 12. 20. 29. 27. 23. Example. . The distribution below represents the examination marks of 120 students.. Draw a histogram to represent the data. ID: 630061

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Slide1

Histograms

Using a histogram to estimate the median

Slide2Mark

0 –20

20 –3030 –3535 –4545 –5555 –70Frequency91220292723

Example The distribution below represents the examination marks of 120 students.

Draw a histogram to represent the data

Use the histogram to estimate the median

.

Slide3Height (cm)

Frequency

130 – 135 5135 – 140 7140 – 150 15150 – 160 29160 – 165 13165 – 170 10

170 – 175 1

Example

The following table gives the heights of 80 children.

Draw a histogram to represent this information.

Using the histogram estimate the height by which 20% of the children exceed.

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