One half of its values will be found below and one half above the median . 一半数值低于中位数,一半数值高于中位数。
Add the frequencies in each class to find the class that contains that centermost element . 把每一组的频率逐组相加,找出包含中位数的那一组。
To find the median of a data set, we first array the data in ascending or descending order . 为了计算一组数据的中位数,我们首先要把这些数据按由大到小或由小到大的顺序加以排列。
We can find the median even when out data are qualitative descriptions like color or sharpness, rather than numbers . 资料不是数字资料而是象颜色、清晰度等品质指标时,我们也可以计算中位数。
The median is not as highly influenced by the frequency of occurrence of a single value as is the mode, nor is it pulled by extreme values as is the mean . 中位数既不象众数那样受到数值出现次数的影响,又不象平均数那样随着特殊值的大小而偏移。
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