Ex-post facto research is systematic empirical inquiry in which the scientist does not have direct control of independent variables because their manifestations have already occurred or because they are inherently not manipulated.
Inferences about relations among variables are made, without direct intervention, from co commitment variation of independent and dependent variables. This kind of research is based on a scientific and analytical examination of dependent and independent variables.
Independent variables are studied in retrospect for seeking possible and plausible relations and the likely effects that the changes in independent variables produce on a single or a set of dependent variables.
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