statistiques (1) norme (1) spectacle (1) recherche (1) modèle (1) méthodologie (1) plomb (1) santé (1) effet (1) éducation (1) science économique (1) Education (1) Variation (1) Treatment (1) Instruments (1) Methodology (1) Methods (1) Identification (1) Statistics (1) Value (1) Trials (1) Statistics (1) Research (1) Probabilities (1) Methodology (1) Measurement (1) Mathematical statistics (1) Lead (1) Latent variables (1) Item response theory (1)