//-->
School Nutrition Dietary Assessment Study IV: Sampling and Data Collection Methods.
Hall, John, (2012)
Guidelines for Multiple Testing in Impact Evaluations of Educational Interventions.
Schochet, Peter Z., (2008)
Statistical Power for Random Assignment Evaluations of Education Programs.
Incorporating Experimental Designs Into New NCES Data Collection Methodologies
Metcalf, Charles E., (1996)
Random Assignment
Metcalf, Charles E., (1992)
An econometric model of the income distribution
Metcalf, Charles E., (1972)