![]() ![]() In this case, the minimum recorded day temperature is 57 ☏. The minimum is the smallest number of the data set. The recorded values are listed in order as follows (☏): 57, 57, 57, 58, 63, 66, 66, 67, 67, 68, 69, 70, 70, 70, 70, 72, 73, 75, 75, 76, 76, 78, 79, 81.Ī box plot of the data set can be generated by first calculating five relevant values of this data set: minimum, maximum, median ( Q 2), first quartile ( Q 1), and third quartile ( Q 3). The generated boxplot figure of the example on the left with no outliers.Ī series of hourly temperatures were measured throughout the day in degrees Fahrenheit. Examples Example without outliers įigure 5. Other kinds of box plots, such as the violin plots and the bean plots can show the difference between single-modal and multimodal distributions, which cannot be observed from the original classical box-plot. IQR = Q 3 − Q 1 = q n ( 0.75 ) − q n ( 0.25 ) for both whiskers. Interquartile range (IQR) : the distance between the upper and lower quartiles.In addition to the minimum and maximum values used to construct a box-plot, another important element that can also be employed to obtain a box-plot is the interquartile range (IQR), as denoted below: ![]()
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