A correlation coefficient is a single number, ranging from negative one to positive one, that measures the strength and direction of the linear relationship between two variables. Karl Pearson formalized the product-moment correlation coefficient still named for him in an 1896 paper on regression, building on ideas about correlated variables developed earlier by Francis Galton, and it remains the most widely used measure of association between two quantitative variables.
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Correlation coefficient (Wikipedia)
Belongs To: Statistics, Lead, sentence 1Quote, Belongs To: Statistics, Lead, sentence 1
A correlation coefficient is a numerical measure of some type of linear correlation, meaning a linear function between two variables.
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