Question

Let x = sodium and y = sugar for the breakfast cereal data in the Cereal data file on the text CD and in Table 2.3 in Chapter 2.
a. Construct a scatterplot. Do any points satisfy the two criteria for a point to be potentially influential on the regression? Explain.
b. Find the regression line and correlation using all the data points, and then using all except a potentially influential observation. Summarize the influence of that point.


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  • CreatedSeptember 11, 2015
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