Question $61$ pts

What is the total impurity of the training data?

$0\mathrm{.}44$

Flag question: Question $7$

Question $71$ pts

What is the total impurity of the $2$ training data subsets based on the best split?

$0$

Flag question: Question $8$

Question $81$ pts

What is the root decision node?

Group of answer choices

x$1<1\mathrm{.}5$

x$1<2\mathrm{.}5$

x$1<3\mathrm{.}5$

x$2<1\mathrm{.}5$

x$2<2\mathrm{.}5$

x$2<3\mathrm{.}5$

x$1<1\mathrm{.}5$ and x$2<0\mathrm{.}5$

x$1<2\mathrm{.}5$ and x$2<1\mathrm{.}5$

Flag question: Question $9$

Question $91$ pts

What is the accuracy of the decision tree model evaluated on the validation data?