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Earn +20 ptsQ: What is the upper and lower quartile?
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How do you find the lower and upper quartiles with only 5 values?
The lower quartile is the second smallest and the upper quartile is the fourth smallest (second largest).
What is the difference between the upper quartile and the lower quartile called?
Interquartile Range, or IQR
What percentage of the data values represented on a box plot falls between the lower quartile and the upper quartile?
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Why is the range always greater than the IQR?
Because the IQR excludes values which are lower than the lower quartile as well as the values in the upper quartile.
What are the upper and lower quartiles?
The upper quartile of a set of data is a value such that a quarter of the observations are greater than that value. The lower quartile is similarly defined as the value such that a quarter of the observations are less than that value.
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