Cohen's d Effect Size ની ગણતરી કેવી રીતે કરવી

Cohen's d Effect Size શું છે?

Cohen's d is a standardised effect size for the difference between two group means, expressed in standard deviation units. d=0.2 is small; d=0.5 medium; d=0.8 large.

પગલું દ્વારા પગલું માર્ગદર્શિકા

1. 1d = (μ₁ − μ₂) / σ_pooled
2. 2σ_pooled = √((σ₁² + σ₂²)/2)
3. 3Larger d = more practically significant difference
4. 4Allows comparison across studies regardless of measurement scale

Worked Examples