For the reading data in the upper left panel of Figure 11.5, recreate the smooths. If you wanted to.

For the reading data in the upper left panel of Figure 11.5,
recreate the smooths. If you wanted to find a parametric regression equation,
what might be tried? Examine how well your suggestions perform.

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For the reading data in the upper left panel of Figure 11.5, recreate the smooths. If you wanted to.
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For the experimental group of the Pygmalion data in Section
11.2.1, create a plot of the smooth using f = 1 and the function rungen.
Recreate the plot, but this time omit the scatterplot of the points by setting
the argument scat to F, for false. What does this illustrate?