correlation coefficient

US /ˌkɔːr.əˈleɪ.ʃən koʊ.ɪˈfɪʃ.ənt/
UK /ˌkɔːr.əˈleɪ.ʃən koʊ.ɪˈfɪʃ.ənt/
"correlation coefficient" picture
1.

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.
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A correlation coefficient of +1 indicates a perfect positive relationship.
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Pearson's rr-value
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correlationcorrelate