Imagine now that you were asked to predict how a student in another class would perform.
| Grade | % obtaining grade |
| A (90 – 100 pts) | 10% |
| B (80 – 89 pts) | 15% |
| C (70 – 79 pts) | 50% |
| D (60 – 69 pts) | 15% |
| F (0 – 59 pts) | 10% |
Question 1: Given no other information, what would be your best guess of the grade of any randomly selected person in the class?
Select an Answer:
A: 90 – 100 pts
Incorrect
Only 10 percent of the students in the class earned an A. If we randomly selected 1 student it is relatively unlikely that that that person earned an A.
B: 80 – 89 pts
Incorrect
Only 15 percent of the students in the class earned a B. If we randomly selected 1 student it is relatively unlikely that that that person earned a B.
C: 70 – 79 pts
Correct
The middle of the grade distribution is a C and 50% of the class received a C grade, so a grade of C is our best guess. .
D: 60 – 69 pts
Incorrect
Only 15 percent of the students in the class earned a D. If we randomly selected 1 student it is relatively unlikely that that that person earned a D.
F: <60 pts
Incorrect
Only 10 percent of the students in the class earned an F. If we randomly selected 1 student it is relatively unlikely that that that person earned an F.
