Problem $11$

Suppose you fit four different models to predict whether someone has an income greater than $$100,000$ a year using their purchase history. You split the data into a

training and test set and use $3-$fold cross$-$validation. The table below shows all the calculated accuracies for each model $($higher accuracy is better$).$

Problem $11\mathrm{.}1$

Which model has the lowest model bias?

Model A

Model B

Model C

Model D

Click to view the solution. why is it d explain in detail