In order to calculate this value we must first understand what the lower quartile, median and upper quartile are: the lower quartile is the median of the lower half of the data. The \(\frac{(n+1)}{ ...

Note that you can request different box plot styles, as discussed in the section "Styles of Box Plots," which follows, and as illustrated in Example 18.2.

The interquartile range is the upper quartile – the lower quartile, so for this data the interquartile range is 47 - 38 =9. Back to top Drawing a box plot from a cumulative frequency Drawing a ...

Bar charts are a way to represent categorical data visually, in a horizontal or vertical display. Bars can be single, stacked, or grouped. By looking through the whole chart, it is easy to see the ...