The mode is the data with the highest frequency in a group of data, and it is the original data in a group of data, not the corresponding number of times. There are multiple patterns in a set of data. For example, in data 2, 3,-1, 2, 1, 3, 2, 3 all appear twice, all of which are patterns in this set of data. Generally speaking, the number with the highest frequency in a set of data is called the mode of this set of data.

If the data has been classified, the data with the highest frequency is the pattern; If the data are grouped, the group median of the group with the highest frequency is the mode. The modes obtained by observation are generally rough modes. This is especially useful when there is no obvious order between values or observations, which often happens in non-numeric data, because the arithmetic mean and median may not be well defined.

Characteristics and application of the model;

It is not reliable to represent a set of data by a pattern, but the pattern is not affected by extreme data, and the solution is simple. In a group of data, if individual data have great changes, it is more appropriate to choose the median to represent the "concentration trend" of this group of data. Most levels are not necessarily the median, and the median is the median.

Starting from the puzzles encountered in the study and application of average, mode and median, this paper makes a comparative analysis of the connotation, quantitative relationship and main aspects needing attention in the application of average, mode and median, and firmly believes that mode is an important concept in statistics with a scientific attitude that is not only books but also supercilious.

Baidu Encyclopedia-Mode (Statistical/Mathematical Terminology)