The Histogram
The histogram is a graph that displays the data by using contiguous vertical bars
(unless the frequency of a class is 0) of various heights to represent the frequencies of
the classes.
Construct a histogram to represent the data shown for the record high temperatures for each of the 50 states (see Example 2–2).
Class boundaries
| Frequency |
99.5–104.5 | 2 |
104.5–109.5 | 8 |
109.5–114.5 | 18 |
114.5–119.5 | 13 |
119.5–124.5 | 7 |
124.5–129.5 | 1 |
129.5–134.5 | 1 |
Step 1: Draw and label the x and y axes. The x axis is always the horizontal axis, and
the y axis is always the vertical axis.
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