what is the interquartile range?
Question
what is the interquartile range?
Solution
The interquartile range (IQR) is a measure of statistical dispersion, or in simpler terms, it's a measure of where the "middle half" is in a data set. Here's how you calculate it:
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Arrange the data in increasing order.
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Calculate the first quartile (Q1), which is the middle number between the smallest number and the median of the data set.
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Calculate the third quartile (Q3), which is the middle value between the median and the highest value of the data set.
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Subtract Q1 from Q3. This value is the interquartile range.
The IQR can be used to identify outliers in the data. Any number less than Q1 - 1.5IQR or greater than Q3 + 1.5IQR is considered an outlier.
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