Mode is a statistical term, and there are obvious values of concentrated trend points in statistical distribution, which represent the approximate level of data (mode may not exist or there may be more than one).

Revision definition: it is the value with the highest frequency in a set of data, which is called the mode. Sometimes there are several patterns in a set of numbers. Represented by M. rational knowledge: in short, it is the number with the largest proportion in a set of data.

Extended data represents a set of data through patterns, which is unreliable. However, 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.

It is especially useful when there is no obvious order between values or observations, which often happens in non-numerical data, because the arithmetic mean and median may not be well defined.

Example: the plural of {chicken, duck, fish, fish, chicken, fish} is fish.

Pattern calculation is the most commonly used and representative in sales.

After sorting a set of numbers, the middle number (the number of numbers is odd); Or the average of the middle two numbers (even number).

This number may be one of the data, or it may not be the original number at all.

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