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Bad model? A student who has created a linear model is

Chapter 8, Problem 20E

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QUESTION:

Problem 20E

Bad model? A student who has created a linear model is disappointed to find that her R2 value is a very low 13%.

a) Does this mean that a linear model is not appropriate? Explain.

b) Does this model allow the student to make accurate predictions? Explain.

Questions & Answers

QUESTION:

Problem 20E

Bad model? A student who has created a linear model is disappointed to find that her R2 value is a very low 13%.

a) Does this mean that a linear model is not appropriate? Explain.

b) Does this model allow the student to make accurate predictions? Explain.

ANSWER:

Step 1 of 2

a) No, because most of the variability in the variables has not been explained by the model since  is very small.

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