Correlation is the statistical linear correspondence of variation between two variables. It combines two related statistical concepts: variance and standard deviation.

A value of -1 shows a perfect negative, or inverse, correlation, while 0 means no linear correlation exists. Article Sources Investopedia requires writers to use primary sources to support their work.

The formula for Pearson’s correlation coefficient, r, relates to how closely a line of best fit, or how well a linear regression, predicts the relationship between the two variables. It is presented ...

Zero-correlation linear cryptanalysis is an important method to analyze the security of block ciphers. But there are few works on zero-correlation linear attacks combined with the related-key setting.

We see a very low correlation between the FTSE 100 and U.K. yields or GBP/USD. This supports our general idea of both U.K. macro data and BoE decisions not having a significant influence on the ...

Figure 1: The results of multiple linear regression depend on the correlation of the predictors, as measured here by the Pearson correlation coefficient r (ref. 2). (a) ...