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...Wooldridge introductory econometrics d ed chapter multiple regression analysis further issues whateects will the scale of x and y vari ables have upon co ecients point estimates are so they j in data for instance dol lars wage per additional year education if we were to measure either or dier ent units magnitudes these derivatives would change but overall t regres sion equation not is based on correlation any linear transformation leaves between two variables unchanged r be un aected by scaling stan dard error a coecient estimate same as both factor scaled thus each s statistic value with p irrespective standard termed root mse stata dependent able anova f all statistics associated hypothesis tests param eters an example consider babies birth weight measured pounds number cigarettes day smoked their mothers this explanatory power ounces kilograms alternatively nicotine consumption numberofpacksperdayrather than acorollary result applies variable logarithmic form since slope case elas t...