Exploring Data Visually - Data Points: Visualization That Means Something - page 536

FIGURE 4-52 Heights of imaginary people, sorted from shortest to tallest

FIGURE 4-54 Histogram showing heights

FIGURE 4-53 Heights arranged in bins

The box plot, as shown in Figure 4-56, is an overview visualization that pro-
vides a general sense of distribution. The box in the middle is defined by
the lower and upper quartiles. That is, whereas the median (the line in the
middle) represents the halfway point, the lower quartile represents where
one-quarter of the values are lower, and the upper quartile represents
where one-quarter of the values are higher.