Finicade
Data Apprentice Lv 1
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Level 11 · ◆◆◆ · ~12 min

Interactions & Quadratics

Interactions & Quadratics

"Let the effect of one variable depend on another, or on itself — and learn to read a marginal effect that is no longer a single coefficient."

interaction termseffect that depends on another variablequadratics and diminishing returnsmarginal effect and the turning point
🚀 You're jumping ahead. This builds on Dummy Variables — but play it now and you'll still earn full XP. If it feels steep, those make a gentler on-ramp.

A short lesson, then a quiz. ❤️×3 — a wrong answer costs a heart; finish with at least one left and the level is yours. Lose all three and you'll have to try again. Replay any time — XP and cleared levels are never lost.