Histogram A histogram is what we call an area diagram. It indicates the frequency of a class interval. The class interval or the range of values is known as bins or classes with reference to histograms. A bar indicates the number of data points within a specific class. That means the higher the frequency of a particular class, higher the bar. Let us see an example of a Histogram. From the below-given table of the various heights of trees in a region, we will draw a histogram to illustrate how it is done. Let us look at the frequency table now. Height of Trees (ft) No. of trees 60-65 3 65-70 3 70-75 8 75-80 10 80-85 5 85-90 2 Now here the heights of the tree are continuous data. These class intervals are the bins. And the number of trees are obviously the frequency. And now let us draw a histogram (given below) that represents the above data. Histograms vs Bar Charts In bar graphs, each bar represents one value or category. On the other hand in a histogram...
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