👉 A correlation is a statistical measure that compares two or more variables to determine their relationship. It involves measuring how closely one variable is related to another, and it can be used to predict outcomes based on changes in one variable. In other words, a correlation coefficient measures the strength and direction of the linear relationship between two variables. A positive correlation coefficient indicates that as one variable increases, the other variable tends to increase at the same rate. Conversely, a negative correlation coefficient indicates that as one variable increases,