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Figure 5.21 Interaction model: Mean response as a function of F and B when F and B interact to affect E(y)

Figure 5.21 Interaction model: Mean response as a function of F and B when F and B interact to affect E(y)

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Figure 5.22 SAS printout for main
effects model, Example 5.10

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Figure 5.23 SAS printout for
interaction model, Example 5.10

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Figure 5.24 MINITAB graph of sample
means for engine performance

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Figure 5.25 SAS printout for
nested model F-test of interaction

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Section 5.9
Models with
Three or More
Qualitative
Independent
Variables

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Section 5.10
Models with
Both
Quantitative and
Qualitative
Independent
Variables
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Figure 5.26 Model for E(y) as a
function of engine speed

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Figure 5.27 Model for E(y) as a function of
fuel type and engine speed (no interaction)

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