Summary:
Letter Grade Equiv.:
0.000000 <= x < 0.125000 is a F
0.125000 <= x < 0.375000 is a D
0.375000 <= x < 0.625000 is a C
0.625000 <= x < 0.875000 is a B
0.875000 <= x is an A
Number of people of each letter grade:
F: 0
D: 3
C: 6
B: 4
A: 2
Number of correct and wrong answers for each questions:
Q1: C=9 W=5
Q2: C=9 W=5
Q3: C=10 W=3
Q4: C=0 W=15
Q5: C=12 W=3
Q6: C=5 W=10
Q7: C=9 W=5
Q8: C=6 W=8
Q9: C=13 W=2
Q10: C=10 W=3
Q11: C=10 W=4
Q12: C=9 W=6
Q13: C=6 W=8
Q14: C=12 W=3
Q15: C=6 W=8