Sums each answer's partial credit; null when the suite gives none. A failed answer (no checks) earns nothing and costs what a graded answer is worth on average, so a model that fails answers can't score 100%.
Sums each answer's partial credit; null when the suite gives none. A failed answer (no checks) earns nothing and costs what a graded answer is worth on average, so a model that fails answers can't score 100%.