Pearson Correlation coefficient for simple correlation, is denoted by r, is a way of measuring the relationship between the two sets of information.
The data are used form interval scale or ration scale.
Pearson’s correlation coefficient is a statistical measure of the strength of a linear relationship between paired data. The relationship between the variables use the symbol of the variables x and y. The correlation coefficient r is between -1 to 1.Where positive correlation indicates that both variables or decrease together, whereas negative correlation indicates that as one variable increases, so the other decreases, and vice versa.