This page will provide an introduction to understanding and using library call numbers. Each book in the library has a unique call number. A call number is like an address: it tells us where the book is located in the library.
Definition of Correlation: Correlation is a statistical technique that is used to measure and describe the STRENGTH and DIRECTION of the relationship between two variables. Correlation requires two scores from the SAME individuals.
Correlation measures the closeness (link) of the relationship between two or many variables without knowing the functional relationships. In contrast, regression can show the form of the relationship of one independent variable with one dependent variable. The forms of the intrinsic linear relationship such as polynomial, exponential and logarithmic regression tend to have low correlation.