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Chapter 5: Bivariate Data
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Figure 5-34:
Plot illustrating outliers and
Influential points
If the influential point Age = 35 and Resting Pulse Rate = 90 is removed, the
model’s intercept and slope will be considerably different as shown in
Figure 5-35
. The new model has a significantly greater
intercept and a
significantly smaller slope. The model fit is drastically affected by removal
of the influential point
.