lesson 2 of 5 · baselines before fancy modelslesson 2 of 5 · baselines before fancy modelslesson 2 of 5 · baselines before fancy modelslesson 2 of 5 · baselines before fancy modelslesson 2 of 5 · baselines before fancy modelslesson 2 of 5 · baselines before fancy modelslesson 2 of 5 · baselines before fancy modelslesson 2 of 5 · baselines before fancy modelslesson 2 of 5 · baselines before fancy modelslesson 2 of 5 · baselines before fancy modelslesson 2 of 5 · baselines before fancy models
Checkpoint
One last thing before we move on. pass this to mark the lesson done, or skip and keep moving. hop to the next when you're ready.
Assemble the two-rung ladder end to end: learn the majority class FROM TRAIN, score both it and the rule tickets>=4 on the same test set with one shared accuracy helper, print an aligned board line per rung (:<10 and :.0%), then print whether the rule beats the majority rung — the 'does a pattern exist beyond common sense?' verdict.