Last Updated
：2025/11/21
covariance
Noun
Japanese Meaning
統計学における共分散。これは、２つの実数値ランダム変数の間の共変動（変数間の依存関係）を示す統計量で、各変数の期待値との差の積の平均として定義される。
Sense（1）
（ plural ）
Quizzes for review
(statistics) A statistical measure defined as scriptstyle operatorname Cov(X,Y)= operatorname E((X-𝜇)(Y-𝜈)) given two real-valued random variables X and Y, with expected values scriptstyle E(X),=,𝜇 and scriptstyle E(Y),=,𝜈.
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covariance
To assess how two variables co-move, statisticians compute covariance using the formula Cov(X,Y)=E((X-μ)(Y-ν)).
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To assess how two variables co-move, statisticians compute covariance using the formula Cov(X,Y)=E((X-μ)(Y-ν)).
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