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you must subtract the value of the first quartile from the value of the third quartile (IQR = Q3 – Q1). What Percent of the Data Does the Interquartile Range Encompass? Fifty percent of the data ...
To find the interquartile range, subtract the value of the lower quartile Q1 from the value of the upper quartile Q3. A school librarian records the number of books borrowed in a school year by ...
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