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Question 5 A medical researcher was interested in examining what factors influenced patient’s scores in a fitness test. He ran a multiple linear regression, which included four predictors (‘hours spent taking part in physical activity per day’, ‘calories consumed per day’, ‘BMI’, and ‘hours spent sitting per day’). His model had a R2of .665, anadjusted R2of .661, an F-statistic of 112.56 (p 0.00). How would you interpret his findings?Question 6 An online retailer uses the number of website clicks to predict sales revenue for an online hair-replacement (wig) company. The R2statistic represents?Question 7 If Forbes includes years of education and age to predict CEO salary, what would multicollinearity represent?1 out of 1 points1 out of 1 points1 out of 1 points
Question 8 The difficulty with using one regression equation to predict values in a different set of data is called?Question 9 Multiple regression is a technique which?Question 10 Heteroscedasticity occurs when?Question 11 If more than one predictor is used to predict the criterion at the same time then?Question 12 Which of the following statements about the t-statistic in regression is nottrue?Question 13 In a research experiment that looks at the levels of anxiety in relation to recordings of blood pressure, what factors would cause your data to be biased due to the effect on the estimated regression coefficients?Question 14