Module 09 Self-Test
- Why can't you use standard k-fold CV on time series data?
- What is Gini impurity? What value means maximum impurity for binary classification?
- Name 3 North Star metrics for 3 different companies.
- What does a Python decorator actually do mechanically?
DATE_TRUNC('month', '2024-07-18')returns what?- Your decision tree has 100% train accuracy and 60% test accuracy. Diagnose.
Practice Questions
Q: Why can't you use standard k-fold CV on time series data?
Q: What is Gini impurity? What value means maximum impurity for binary classification?
Q: Name 3 North Star metrics for 3 different companies.
Q: What does a Python decorator actually do mechanically?
Q:
DATE_TRUNC('month', '2024-07-18') returns what?
Q: Your decision tree has 100% train accuracy and 60% test accuracy. Diagnose.