👉 Cointenancy, also known as cointegration or cointegration test, is a statistical tool used to examine whether two variables are closely related. It measures how one variable changes in response to another and determines if there is a relationship between them that would be expected given the linear relationships between them. In econometrics, it refers to an analysis of time-series data where two or more variables are related by a linear dependence. It helps identify potential cointegration relationships between two or more variables