Question

What does correlation coefficient mean

Answer 1

a number between −1 and +1 calculated so as to represent the linear dependence of two variables or sets of data.

Explanation:

Formula
`Formular =\frac{\sum\left(x_(i)-\bar{x}\right)\left(y_(i)-\bar{y}\right)}{\sqrt{\sum\left(x_(i)-\bar{x}\right)^(2) \sum\left(y_(i)-\bar{y}\right)^(2)}}r = correlation coefficientx_(i) = values of the x-variable in a sample\bar{x} = mean of the values of the x-variabley_(i) = values of the y-variable in a sample\bar{y} = mean of the values of the y-variable`