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Techniques for analyzing the relationship between one (or more) "dependent" variables and "independent" variables.

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Is it valid to use a difference score as an independent variable in a regression analysis

Using a difference score as a predictor in multiple regression will usually lead to some loss of model fit, i.e. … Download Difference Scores in Linear Regression: Model Fit with Correlated Predictors MICHAEL C. HELFORD, ADRIAN L. THOMAS, MARLAINA M. MONTOYA, LONG H. NGUYEN, AYESHA P. JAMASPI, ASHLEY Y. …
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