RESEARCH METHODOLOGY

Detailed explanation-1: -r is often denoted as rxy to emphasize the two variables under consideration. For samples, the correlation coefficient is represented by r while the correlation coefficient for populations is denoted by the Greek letter rho (which can look like a p).

Detailed explanation-2: -Two letters are used to represent the Pearson correlation: Greek letter rho () for a population and the letter “r” for a sample.

Detailed explanation-3: -The correlation coefficient r is a unit-free value between-1 and 1. Statistical significance is indicated with a p-value. Therefore, correlations are typically written with two key numbers: r = and p = . The closer r is to zero, the weaker the linear relationship.