Unverified50% confidenceFactExact time
Cohen's d的计算公式为 d = (μ₁ - μ₂) / σ_pooled，其中σ_pooled是两组样本的合并标准差
1
Sources
50%
Confidence
Long-term
Relevance
7/7/2026
First Seen
Sources
AI导师效应量达1.30：达特茅斯实验如何逼近教育界「两西格玛」圣杯
hackernewshackernews7/5/2026
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