算术平均数_中数_众数
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| 算术平均数_中数_众数 [2024/03/10 09:50] – [算术平均数] zwz | 算术平均数_中数_众数 [2024/03/10 16:41] (当前版本) – 李佳熠2 | ||
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| ====== 中数 ====== | ====== 中数 ====== | ||
| - | 中数（median）又被称为中位数，它将我们所研究的数据氛围数目相等的两半，其中一半的值比它小，而另一半的值比它大。 | + | 中数（median）又被称为中位数，它将我们所研究的数据分为数目相等的两半，其中一半的值比它小，而另一半的值比它大。 |
| - | 如果数列的总个数n为**奇数**，且与相邻的值都不相等，那么最中间的，也就是第(n+1)/ | + | The median divides the data into 2 halves with the same amount, one half smaller than it, while the other larger than it. |
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| + | 如果数列的总个数n为**奇数**，且最中间的值与相邻的值都不相等，那么最中间的，也就是第(n+1)/ | ||
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| + | If the total of the data(n) is odd, and the number in the middle, the one in the position of (n+1)/2, is not equal to its neighbors, then it would become the median. If n is even, the mean of the 2 numbers in the middle(the two in the position of n/2 and n/2+1) would become the median, usually. If there exists several same numbers in the middle of the ordered data, in principle, they should be considered as a continuum, and use interpolation method to calculate the median by the accurate boundaries of that number. | ||
| 中数只和位置有关，所以对数据变动的反应不够灵敏，不过这恰好使它不易受到极端值的影响。而且中数也不能进行代数运算。 | 中数只和位置有关，所以对数据变动的反应不够灵敏，不过这恰好使它不易受到极端值的影响。而且中数也不能进行代数运算。 | ||
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| + | The median only relates to the position in the data group, so it is not sensitive enough to the changes in data, but in the same time, the median is not easy to be affected by extreme numbers. The median cannot perform algebra calculations. | ||
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| 众数（mode）是指出现次数最多的那个数或类目，用M0来表示。// | 众数（mode）是指出现次数最多的那个数或类目，用M0来表示。// | ||
| - | 众数也不受极端值的影响，但是代表性比中数还差，也不可以进行代数运算，因而应用较少。 | + | The mode is the number or genre to be most frequently appear, usually noted as M0. //There may exist more than 1 modes in a data series.// |
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| + | 众数也不易受极端值的影响，但是代表性比中数还差，也不可以进行代数运算，因而应用较少。 | ||
| + | The mode is also not easy to be affected by extreme numbers, but its representativeness is weaker than median, and it also cannot perform algebra calculations, | ||
算术平均数_中数_众数.1710064256.txt.gz · 最后更改: 2024/03/10 09:50 由 zwz