stastistics
posted by jamal .
You have a hot grill and an empty hamburger bun, but you have sworn off greasy hamburgers. Would a meatless hamburger do? The data for 12 brands of meatless hamburger were collected. Calories, fat, and sodium in these meatless hamburgers were used to predict taste score (between 0 and 100). The correlation between fat and calories is r = 0.828. How might this model be improved?
Predictor Coef SE Coef tvalue Pvalue
Constant 69.42 23.84 2.91 0.020
calories 0.5772 0.2727 2.12 0.087
fat 8.359 3.263 2.56 0.034
sodium 0.05116 0.03792 1.35 0.214
Answer
a. Omit predictors that are not useful onebyone, until we’re left with only useful predictors.
b. Omit fat from the model.
c. Omit sodium and calories from the model.
d. Add new predictor variables to the model.
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