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What is a Histogram – Meaning and Examples

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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