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Figure 3.8 Graphing the model with b1 = 0: y = b0 + e

Figure 3.8 Graphing the model with b1 = 0: y = b0 + e

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Figure 3.9 Sampling distribution of
^
β1

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Figure 3.10 Rejection region and
calculated t-value for testing whether the
slope β1 = 0

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Figure 3.11 SAS printout for
advertising-sales regression

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Section 3.7
The
Coefficient of
Correlation

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Figure 3.12a&b Values of r and
their implications

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Figure 3.12c&d Values of r and
their implications

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