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.
Questo esercizio fa parte del corso
R For SAS Users
Esercizio pratico interattivo
Prova a risolvere questo esercizio completando il codice di esempio.
# Save model output and output of model summary for infants
modelInfants <- lm(___ ~ ___, data = ___, subset = ___)
summaryInfants <- summary(___)