 Garrett H.

# Regression Help

The following table gives information on the amount of sugar (in grams) and the calorie count in

one serving of a sample of 13 varieties of Kellogg’s cereal.

 Sugar (grams) 4 15 12 11 8 6 7 2 7 14 20 3 13 Calories 120 200 140 110 120 80 190 100 120 190 190 110 120

1.     Which is the dependent variable and which is the independent variable?

2.     Do you expect a positive or negative relationship, and why?

3.     If ŷ= 89.4845 + 5.1369x + e, interpret the constant and coefficient of x (slope).

4.     Conduct a test of the research hypothesis that B > 0. Assume t = 3.110 and α = 0.05. Solve this with both the critical value and p-value approach.

5.     Interpret r = 0.6708 and r2 = 0.45

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