C04 · Lesson 13 of 22 · 16 min · 6 hands-on tasks
Regression Pitfalls
Two new jobs go into Kofi's depth model and the slope halves overnight. One is a house that hit a rock seam; the other is the Ridge Road mansion, recorded wrongly. Find the points that bend a regression, learn when to keep or drop them, and spot the other classic traps: look-alike variables, misleading spreads, reversed causes and lines stretched too far.
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