Question: Use rplot to plot a smooth of the Pygmalion data using f = 0.75 and 20% trimmed means. Create a plot for both the control

Use rplot to plot a smooth of the Pygmalion data using f = 0.75 and 20% trimmed means. Create a plot for both the control and experimental groups when the goal is to predict post IQ scores with pretest scores. Comment on how the results compare to using f = 1.

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