Year : 2020 | Volume : 6 | Issue : 1 | Page : 7--11
Principles of correlation and regression analysis
Department of Biostatistics, All India Institute of Medical Sciences, New Delhi, India
In statistics, the correlation analysis quantifies the strength of the association between two quantitative variables. In the present article, we discuss how to establish a relationship or an association between two quantitative variables. While the correlation provides a quantitative way of measuring the degree or strength of a relation between two variables, regression analysis describes this relationship. Correlation and agreement are also distinguished, and pitfalls of correlation are discussed.