
Lists 39
FIGURE 3.1
A histogr am of the heights o f the 33 inhabitants of an elementary school
classroom. The point at 46 in. corresponds to the number of occupants with
height h tha t satisfies 46 ≤ h < 47 in., and so on for each of the other bins.
in. contains all the elements between 46.0 and 46 .999. . . in., and so on for each
bin, identical to the binning described in Section 3.3.3. This histogram shows
a roughly bell-curve (no rmal) distribution (see Section 3.5) centered around
51 in., and three outliers between 65 and 70 in.
The age list histogram is plotted in Figure 3.2. Here the data have been
binned in ten-year intervals. The populatio n