What is the nature of correlation coefficient in linear regression

R has symmetry. the correlation coefficient between x and y and the correlation coefficient between y and x are equal, i.e., rxy = ryx, the nature of the correlation coefficient in linear regression is that r has symmetry. Linear regression is the use of mathematical statistics in regression analysis, to determine the interdependent quantitative relationship between two or more variables of a statistical analysis method, the use of a very wide range.