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Level 15
· ◆◆◆◆ · ~13 min
The t Test & Confidence Intervals
The t Test & Confidence Intervals
"Turn an estimate and its standard error into a verdict: is this coefficient distinguishable from zero, and what range of values is plausible?"
the t statistic t = β̂/setesting H₀: βⱼ = 0p-valuesconfidence intervals β̂ ± c·sestatistical vs economic significance
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.