Best model by sex

In the previous exercise, you predicted age from either shuckedWeight or shellWeight. shellWeight did a better job predicting age with the highest r.squared.

In this exercise, run the simple linear regression of age by shellWeight three times - one for each abalone sex ("I", "F", "M"). Save your results from each lm() model and compare the model fit statistics such as r.squared.

The abaloneKeep dataset and dplyr package are loaded and a plot of each model fit is also provided for you. Click double arrow next to Plots window to expand figure for better viewing.

Run simple linear regression of age by shellWeight for infant abalones, save output as modelInfants. Also run summary of modelInfants and save output as summaryInfants.

Take Hint (-7 XP)

Exercise

Best model by sex

Instructions 1/4