The mode is the value that occurs most frequently in a set of values. The greatest degree of clustering occurs at the mode.
The modal wage, for example, is the one received by the greatest number of workers. The modal color for a new product is the one preferred by the greatest number of consumers.
In a perfectly symmetrical distribution, such as the normal distribution (the distribution on the left, below), the mean, median, and mode converge at one point.
In an asymmetrical, or skewed, distribution, such as the lognormal distribution, the mean, median, and mode tend to spread out, as shown in the second distribution (on the right) in the following example (Figure 1, Symmetrical and Asymmetrical Distributions).