The Zhang family is rich and nine neighbors are poor. On average, everyone is 1 million. How to analyze it from a statistical point of view?

The sample size is small and the variance is too large. The average value can't reflect the real situation of the data. This simple average is unfair, unjust, unreliable and unrealistic because it doesn't make any statistics on the income gap. Average can't represent the majority, maybe the wage growth of a certain group is relatively high, which drives the average wage growth.

The average value is the sum of all the data, and then divided by the number of data to get an average value. It only reflects the average value of the data, but can't really reflect the distribution law of the data, not to mention that most of the data must be near the average value. This means that the average does not necessarily represent the majority.

In statistics, what really represents most situations is the mode and the median.

The average value can only represent the average value, can only reflect the average value of data, and cannot reflect the distribution law of data. Only the majority can represent the majority.

In statistics, the number used to represent the median value of data is called median. It requires data to be arranged in a certain order, such as from small to large or from large to small, and then in this data team, the middle number is the median.

Only the mode and median can reflect the distribution law of data more accurately. It is not enough to understand the data only by looking at the average. Only by further understanding the mode and median can we have a more intuitive and accurate understanding of the data.