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...What is mlr multiple regression a statistical method for estimating the relationship between dependent variable and two or more independent predictor variables linear simply studying purposes prediction explanation theory building operation uses ordinary least squares solution as does simple bi describes line which sum of squared differences predicted actual values are at minimum represents function that minimizes errors ypred bx bnxn produces model identifies best weighted combination to predict criterion estimates relative importance several hypothesized predictors assess contribution combined change design requirements one explanatory sample size times many cases...