Section II - Assumptions, Data Screening, and Verification of Assumptions (multiple paragraphs)
The correct use of the coefficient of correlation depends heavily on the assumptions made with respect to the nature of data to be correlated and on understanding the principles of forming this index of association. Correlation is a central measure within the general linear model of statistics. It can be employed for measurement of relationships in countless applied settings. However, in situations where its assumptions are violated, correlation becomes inadequate ...