Average, a statistical term, is a quantity that represents the trend of a group of data. Refers to the sum of all the data in a set of data divided by the number of this set of data. It is an indicator reflecting the trend of data concentration. The key to solve the problem of average application is to determine the "total amount" and the total number of copies corresponding to the total amount.
* * * York complex number, where two real parts are equal and imaginary parts are opposite, is * * * York complex number. When the imaginary part is not zero, the complex number of yoke means that the real part is equal and the imaginary part is opposite. If the Ruo Xu part is zero, its * * * yoke complex number is itself (also called * * * yoke imaginary number when the imaginary part is not equal to 0). The * * * yoke of the complex number z is marked as z (with a horizontal line on it), and sometimes it can be expressed as Z*. At the same time, the complex number Z (plus a horizontal line) is called the complex yoke of the complex number Z.
Extended data:
Average, median and mode are all statistics that describe the average level of data, and each has its own characteristics. Everyone is familiar with the average, the median describes the middle level of a set of data, and the mode describes the situation with the highest frequency in a set of data.
An obvious advantage of the average value is that it can make use of the characteristics of all data and is relatively easy to calculate. In addition, in mathematics, the average value is a statistic that minimizes the sum of squares of errors, that is to say, using the average value to represent data can minimize the secondary loss.
Therefore, the average value is a commonly used statistic in mathematics. However, the average also has some disadvantages, precisely because it uses all the information of data, and the average is easily influenced by extreme data.
Baidu Encyclopedia-Average
Baidu Encyclopedia-* * * Yoke Complex Number