中心极限定律
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| 中心极限定律 [2024/03/15 04:56] – 2104龚文滕 | 中心极限定律 [2024/03/15 04:57] (当前版本) – 2104龚文滕 | ||
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| - | **标准误（standard of error）**，指样本均值分布的标准差，是反映样本均值分布变异性的指标。 | + | **标准误（standard of error）** |
| + | *指样本均值分布的标准差，是反映样本均值分布变异性的指标。 | ||
| *定义式为σ/ | *定义式为σ/ | ||
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| *The definition formula is σ/√n, σ is the standard deviation of the population, and n is the sample size. | *The definition formula is σ/√n, σ is the standard deviation of the population, and n is the sample size. | ||
| - | **大数定律（law of large numbers）**：随样本容量的的增大，样本均值与总体均值之间的误差会减小。 | + | **大数定律（law of large numbers）** |
| + | *随样本容量的的增大，样本均值与总体均值之间的误差会减小。 | ||
| *Law of large numbers: As the sample size increases, the error between the sample mean and the population mean will decrease. | *Law of large numbers: As the sample size increases, the error between the sample mean and the population mean will decrease. | ||
| **中心极限定律（central limit theorem）** | **中心极限定律（central limit theorem）** | ||
中心极限定律.1710478607.txt.gz · 最后更改: 2024/03/15 04:56 由 2104龚文滕