标准差的英语

1. 概念解释：标准差是统计学中用来衡量数据分散程度的指标，表示各个数据点与平均数之间的差异。

2. 应用场景：标准差常常用于分析文本中单词使用频率的变化、研究人类行为的规律性、评估股票投资风险等。

3. 统计学意义：标准差越大，说明数据点之间的差异越大，数据分布越分散；标准差越小，说明数据点之间的差异越小，数据分布越聚集。

中英文翻译例句：

1. The standard deviation of the test scores was 10, indicating that the results varied widely. (测试成绩的标准差为10，说明结果差异很大)

2. The study found that there was a high standard deviation in the income of the partints. (研究发现，参与者收入的标准差很高)

3. We calculated the standard deviation of the sample and found that it was significantly different from the population. (我们计算了样本的标准差，发现它与总体明显不同)

4. The company's risk sment showed a high standard deviation in the stock prices, indicating a high level of volatility. (公司的风险评估显示，股票价格的标准差很高，表明波动性很大)

5. The standard deviation of the survey responses indicated that there was a wide range of opinions on the issue. (调查回答的标准差表明，对这个问题有很广泛的看法)