Number of items per test = 19

• 0 mistakes = 100%

• 1 mistake = 90%

• 2 mistakes = 80%

• 3 mistakes = 70%

• 4 mistakes = 60%

• 5 mistakes = 50%

• 6 mistakes = 50%

• 7 mistakes = 30%

• 8 mistakes = 20%

• 9 mistakes = 10%

• 10 mistakes = 0%