What is Influence?
Influence Influence Definition Influence of a variate yu on the population attribute when a variate yu is removed from the population is measured by the following expression: Δ(α,u) = α(y1, …, yu − 1, yu, yu + 1, …, yN) − α(y1, …, yu − 1, yu + 1, …, yN) for each unit u in the population, and α is an arbitrary population attribute. Note the first part of the equation contains the unit u, and the unit u is removed in the second part of the equation. ...