To calculate the IQR, 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?

The interquartile range is another measure of spread, except that it has the added advantage of not being affected by large outlying values. In order to calculate this value we must first ...

4.1 - 2.5 = 1.6\) The range of weights is 1.6 kg. The interquartile range shows the range of the middle 50% of the data. To find the interquartile range, subtract the value of the lower quartile ...