box-and-whisker plots by virginia vimpeny lewis. what information do we need? minimum data value...

Box-And-Whisker Plots By Virginia Vimpeny Lewis

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Box-And-Whisker Plots

By Virginia Vimpeny Lewis

What information do we need?

• Minimum data value

• Lower Quartile

• Median

• Upper Quartile

• Maximum data value

• Outlier values

Page 3: Box-And-Whisker Plots By Virginia Vimpeny Lewis. What information do we need? Minimum data value Lower Quartile Median Upper Quartile Maximum data value

What does it Look Like?

Page 4: Box-And-Whisker Plots By Virginia Vimpeny Lewis. What information do we need? Minimum data value Lower Quartile Median Upper Quartile Maximum data value

What are the parts?

Minimum Value

Lower Quartile

Median

Upper Quartile

Maximum Value

What if there are outliers?

2nd lowest value

Lower Quartile

Median

Upper Quartile

3rd highest value

OutlierOutlier

Page 6: Box-And-Whisker Plots By Virginia Vimpeny Lewis. What information do we need? Minimum data value Lower Quartile Median Upper Quartile Maximum data value

How to Identify the Range?

Minimum Value

Maximum Value

Range

The range is the distance between the Maximum and Minimum Values

Page 7: Box-And-Whisker Plots By Virginia Vimpeny Lewis. What information do we need? Minimum data value Lower Quartile Median Upper Quartile Maximum data value

How to Identify the Interquartile Range?

Interquartile Range

The interquartile range is the distance between the Upper and Lower Quartiles.

Lower Quartile Upper Quartile

Page 8: Box-And-Whisker Plots By Virginia Vimpeny Lewis. What information do we need? Minimum data value Lower Quartile Median Upper Quartile Maximum data value

How is the data divided?There are four sections of a box-and-whisker plot. Each section contains one-fourth or 25% of the data.

25% 25% 25% 25%

Page 9: Box-And-Whisker Plots By Virginia Vimpeny Lewis. What information do we need? Minimum data value Lower Quartile Median Upper Quartile Maximum data value

Now Try to Make Your Own!

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The Tiger’s Whisker

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Performance Reportovh.org.uk/wp-content/uploads/2020/01/Performance-Report-Quarter … · Top Quartile Median Bottom Quartile 100.41% 99.64% 99.07% Quarterly Value Target Status Short

Inter quartile range

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Box whisker show

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