4. Binary Classification

Question 3 of 10

What does an accuracy of 0.8 mean?

You have built a binary classification model to predict if a tree in a forest is sick or healthy. A prediction with an output value of 1.0 means that the model is 100% confident that a tree is healthy.

You train and evaluate your tree prediction model and get an accuracy of 0.8. What does this mean?

Choose the correct answer from the options below.

It means 80% of all predictions are correct It means 80% of all positive predictions are correct It means 80% of all negative predictions are correct It means 80% of all healthy trees were correctly predicted by the model