Question: The article Reduction in Soluble Protein and Chlorophyll Contents in

The article “Reduction in Soluble Protein and Chlorophyll Contents in a Few Plants as Indicators of Automobile Exhaust Pollution” (International Journal of Environmental Studies [1983]: 239–244) reported the following data on x = distance from a highway (in meters) and y = lead content of soil at that distance (in parts per million):
a. Use a statistical computer package to construct scatterplots of y versus x, y versus log(x), log(y) versus
b. Which transformation considered in Part (a) does the best job of producing an approximately linear relationship? Use the selected transformation to predict lead content µwhen distance is 25 µ.

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