correlation coefficient
US /ˌkɔːr.əˈleɪ.ʃən koʊ.ɪˈfɪʃ.ənt/
UK /ˌkɔːr.əˈleɪ.ʃən koʊ.ɪˈfɪʃ.ənt/

1.
相関係数
a statistical measure that calculates the strength of the relationship between two variables and their direction
:
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The study found a high correlation coefficient between exercise and improved mood.
その研究は、運動と気分の改善の間に高い相関係数を見出した。
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A correlation coefficient of +1 indicates a perfect positive relationship.
+1の相関係数は完全な正の相関関係を示す。