Major disadvantage of this chart is that naming of the columns is impossible if there are too many categories. If they are vertical, we speak about a column chart, where the vertical axis contains the scale while the horizontal axis shows the categories like: age group, year, months, etc. Columns can be placed vertically or horizontally. But the usage of these two differ significantly.īar Graphs are used to compare different categories of data, and the scaling is applied to measure the extreme values of the categories within one chart. Both are column-shaped and numerous standing rectangles are placed after each other. Histograms may seem identical to bar graphs at first sight. It is especially important to specify the optimal bin size. However, if you are not careful, viewers will not be able to understand your histogram, or you may fail to get the most out of it. Compared to other summarizing methods, histograms have the richest descriptive power while being the fastest way to interpret data – the human brain prefers visual perception. Histograms are the most useful tools to say something about a bouquet of numeric values. Histograms are column-shaped charts, in which each column represents a range of the values, and the height of a column corresponds to how many values are in that range.
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