Uncle Bruno owns a garden with 30 black cherry trees. Let us understand the histogram graph by plotting one for the given below example. It is the easiest manner that can be used to visualize data distributions. in the same histogram, the number count or multiple occurrences in the data for each column is represented by the y-axis. It is a representation of a range of outcomes into columns formation along the x-axis. A histogram graph is a bar graph representation of data.