==== 一、算数平均数(Arithmetic Mean) ==== **优点(Advantages):** 1、在计算算数平均数时将所有的数值都纳入了考虑范围,反应了分布的变异; When calculating the arithmetic mean, all numerical values are considered, reflecting the variability in the distribution. 2、算数平均数可以进行代数运算; The arithmetic mean allows for algebraic operations. 3、算数平均数是三种集中量数中最灵敏、最客观且最具有代表性的。 The arithmetic mean is the most sensitive, objective, and representative measure among the three central tendency measures. **缺点:**算数平均数的代表性会受到极端数值的影响。 Disadvantages: The representativeness of the arithmetic mean can be influenced by extreme values. ---- ==== 二、中数(Median)==== **优点(Advantages):**中数只和数据所处的位置有关,因此它不受极端数值的影响。 The median is only influenced by the position of data, making it immune to extreme values. **缺点(Disadvantages):** 1、由于只和位置有关,因此中数对数据变动的反应不够灵敏; Because it is solely position-dependent, the median's response to changes in data is not very sensitive. 2、中数不能进行代数运算。 The median cannot undergo algebraic operations. ---- ==== 三、众数(Mode)==== **优点(Advantages):** 1、众数相对来说比较直观,容易理解; The mode is relatively intuitive and easy to understand. 2、众数不受极端值影响。 (在命名型的数据中,一般来说只能用众数) The mode is not affected by extreme values (typically used in nominal data). **缺点(Disadvantages):** 1、反应不够灵敏,代表性差于中数; It is less sensitive and less representative than the median. 2、不能进行代数运算; It cannot undergo algebraic operations. 3、要求数据分布有明显中心。 The data distribution must have a clear central tendency.