covariance是什么意思 covariance的中文翻译、读音、例句

1. 词的意思：协方差，是描述两个变量之间关系的一种统计学量。

2. 词性：名词。

3. 常用场景：协方差是在统计学和金融学中常见的术语，用于测量两个变量的相关性。例如，对于股票市场中的投资者，他们需要了解股票价格之间的协方差来了解他们的投资组合的风险和回报。

4. 词组搭配：

- Covariance matrix：协方差矩阵，是由多个变量之间的协方差构成的矩阵。

- Positive covariance：正协方差，表示两个变量的值增加或减少的趋势是一致的。

- Negative covariance：负协方差，表示两个变量的值增加或减少的趋势是相反的。

5. 相关短语：无。

6. 发音拼写：[ˌkəʊvərˈeɪəns]。

'covariance'这个词语来源于英语，中文翻译为“协方差”。它是用来衡量两个变量之间的关系的统计学指标。当两个变量的协方差为正时，它们的变化趋势是相同的；当协方差为负时，它们的变化趋势是相反的；当协方差为零时，它们之间没有线性关系。

以下是9个含有'covariance'这个词语的例句：

1. The covariance between the stock price and earnings is an important factor in determining the company's valuation. （股价和收益的协方差是确定公司估值的重要因素。）

2. The researchers found that there was a high covariance between education level and income. （研究者发现教育水平和收入之间存在高度协方差。）

3. The covariance matrix is used to determine the strength of the relationships between multiple variables. （协方差矩阵用于确定多个变量之间的关系强度。）

4. The covariance of the data shows that there is a strong correlation between the two variables. （数据的协方差表明两个变量之间存在强烈的相关性。）

5. The covariance between rainfall and crop yields is an important factor in predicting agricultural productivity. （降雨量和农作物产量之间的协方差是预测农业生产力的重要因素。）

6. The positive covariance between sales and marketing expenditures indicates that an increase in marketing spending leads to higher sales. （销售和市场支出之间的正协方差表明增加市场支出会导致销售额增加。）

7. The covariance between interest rates and bond prices is an important factor in bond portfolio management. （利率和债券价格之间的协方差是债券投资组合管理的重要因素。）

8. The negative covariance between stock prices and interest rates indicates that rising interest rates can lead to lower stock prices. （股价和利率之间的负协方差表明利率上升可能导致股价下跌。）

9. The covariance of the data set was analyzed to determine the strength of the relationship between the two variables. （分析数据集的协方差以确定两个变量之间的关系强度。）

中文翻译：协方差

读音：xié fāng chā

例句：协方差是用来衡量两个随机变量之间关系的统计量。(Covariance is a statistical measure used to assess the relationship between two random variables.)

covariance通常被翻译为"共分散、数"的意思，在日常中也代表"共变异数"的意思，发音音标为[kәu'vєәriәns]，在英语中以名词出现较多，在《英语汉语大辞典》中，共找到56个与covariance相关的例句。

Covariance的中文翻译

1.共分散

例句:The Covariance tool computes the value of the worksheet function COVAR for each pair of measurement variables. (“协方差”工具为每对测量值变量计算工作表函数COVAR的值。)

2.数

例句:Inthe covariance model, gender differences are considered to be dynamic and to covary with the macro and micro contexts. (在这一理论模型中，性别差异被视为是动态的，随宏观和微观环境变化而变化的。)

3.共变异数

例句:The proposed algorithm decreases the dimensions of its covariance matrices and has high computational efficiency. (该方法的优点是减少了协方差矩阵的维数，具有较高的计算效率。)

4.协变、共变异数

例句:Further Broof on the Equivalence of the Formulas of Variance-covariance Component Estimation. (翻译:方差-协方差分量估计公式等价性的进一步证明。)

用法及短语

covariance一般作为名词使用，如在eddy covariance(涡流协方差)、environmental covariance(环境协方差)、error covariance([统计 数] 误差协方差)等常见短语中出现较多。

例句

1. The proposed algorithm decreases the dimensions of its covariance matrices and has high computational efficiency. (翻译:该方法的优点是减少了协方差矩阵的维数，具有较高的计算效率。)

2. Further Broof on the Equivalence of the Formulas of Variance-covariance Component Estimation. (翻译:方差-协方差分量估计公式等价性的进一步证明。)

3. The distinction between covariance and contravariance is important for computations with tensors, which often have mixed variance. (翻译:协变和逆变的区别对于张量的计算尤为重要，这往往会出现混合方差。)

4. Stationary of this processes are proved, Ergodicity of the mean and Covariance functions of this process is established; (翻译:证明了该过程是宽平稳过程，均值与协方差均是遍历的；)

5. The eigenvalue of covariance matrix can be used to separate signal from noise. (翻译:利用协方差矩阵的特征值。能实现信号和噪声的分解。)

6. Another concept that's very basic here is covariance. (翻译:另一个基本的概念是协方差。)

7. However, the covariance decomposition of the PS has not previously been used to evaluate medical judgment. (翻译:然而，方差分解的PS以前未曾用于评价医疗判决。)

8. We can get the ellipticity and linearity from the eigenvalues of the covariance matrix. (翻译:由矩阵的特征值，求取椭圆率和线性因子。)

9. Multiple Random Variables, Joint and Conditional Distributions, Independence, Covariance and Correlation. (翻译:多重随机变数，联合与条件分布，独立，共变异与共相关。)

10. The correlation coefficient, like the covariance, is a measure of the extent to which two measurement variables "vary together. " (翻译:与协方差一样，相关系数是描述两个测量值变量之间的离散程度的指标。)

11. Both the correlation coefficient and the covariance are measures of the extent to which two variables "vary together. " (翻译:相关系数和协方差都是描述两个变量离散程度的指标。)

12. standard normal distribution logarithmic normal distribution covariance matrix central limit theorem Chebyshev's inequality (翻译:协方差矩阵中心极限定理切比雪夫不等式贝努利大数定律)