An outlier is a data point that is substantially outside the normal range of the data points being analyzed. True False A multiple regression result is an estimate of the population multiple regression equation and, just as is the case with other estimated population parameters, it is necessary to test for standard deviation the size of the population statistical significance statistical non-significance With a differences test, the researcher tests the null hypothesis that no differences exist between the two group means (or percentages). True False A regression analysis does NOT permit the marketing researcher to make cause-and-effect statements because other dependent variables are controlled other independent variables are controlled other dependent variables are not controlled other independent variables are not controlled