The average value of (1) is calculated, so it will change because of the change of each data;

② The median is obtained by sorting, and is not affected by the maximum and minimum extreme values. Some data changes have no effect on the median. When the individual data in a group of data changes greatly, it is often used to describe the centralized trend of the group of data.

2. Advantages and disadvantages of average and median:

① Average value: all data of the whole group need to be calculated; Easily affected by extreme values in data;

② Median: It can only be determined by arranging the data in order; Insensitive to extreme values in data.

Tips: The above information is for reference only, and no suggestions are made.

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