Habshah, M.; Norazan, M. R.; Imon, A.H.M. Rahmatullah - In: Journal of Applied Statistics 36 (2009) 5, pp. 507-520
Leverage values are being used in regression diagnostics as measures of influential observations in the $X$-space. Detection of high leverage values is crucial because of their responsibility for misleading conclusion about the fitting of a regression model, causing multicollinearity problems,...