[, ]the result of adding several amounts together and dividing the total by the number of amounts平均数◆The average of 4, 5 and 9 is 6.4、5、9 三个数的平均数为 6。◆Food prices have risen by an average of about 5%.食品价格平均上涨约 5%。a level which is usual平均水平；一般水准◆Employees' pay is above average for the industry.雇员的工资高于这行业的平均水平。◆On average, wages have gone up 2%.平均来说，工资上涨 2%。 ()
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partial loss moving average weighted average mean / median / mode <chn/>These words are used to describe different types of averages. Consider the following series of numbers. 这三个词用于描述几种不同类型的平均值。请看下面一组数字：4 4 4 5 6 6 7 The mean (also called the arithmetic mean) is calculated by adding all the numbers together and dividing by how many numbers there are: (4+4+4+5+6+6+7)/7 = 5.14 平均数（mean，亦称算术平均数 arithmetic mean）的计算方法是把所有数字相加再除以有多少个数字：(4 + 4 + 4 + 5 + 6 + 6 + 7)/7 = 5.14The median can only be found if the numbers are arranged in order of size. It is the number in the middle of the series: 5 求中位数（median）需将数字按大小顺序排列，处于数列中间的那个数字：5The mode is the most common number: 4 众数（mode）是出现次数最多的那个数：4