Consider the data set sunspots from andrews and herzberg, Ask an Expert

Statistics

Consider the data set sunspots from Andrews and Herzberg (1985) as a response variable. For the predictor data x, use

Apply Friedman's smoother using trial and error to find a span that seems to work well with the data. Then find an estimate using the span determined by cross-validation. Describe the results (taking into account Comment 5).

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