Distribution is how many times a variable appears either throughout time or space.
Scatter chart, histograms, and Pyramid charts are good choices to visualize distribution, as they allow us to detect the frequency of appearance of a variable.
Pyramid chart is often used to determine the distribution of a population.
In this example, the values between 45 years old and 54 years old are the most frequent elements.
A histogram is often used to visualize the frequency of appearance of a variable over time or space.
The example below visualizes the allergy season cases reported amin U.S. adults in 2012.
April and May are the months where the allergy is the most frequent.
Scatter chart is used in a variety of situation.
In this case, the scatter chart shows the frequency of the height and the weight for adults male and female. The example below shows that the area less than 170cm and 80kg is dominated by women, where the area above 170cm and 80kg is dominated by man.