1
Quiz 12 Report 12/11/2020
1. Summary
Total number of students 10
Attended 8
Missed 2
Average grade 8.88
Standard deviation of grades 1.33
2 2. Comments
• Some of students did not plug in 𝑟 = 𝑎 when they derive the 𝑣𝜃
• Several students could not answer for the sub-question of (a) correctly
• One student calculated wrong answer for (b) even though he derived correct answer for (a)
• One student made a mistake for calculating 𝑠𝑖𝑛3𝜋
2, so derived wrong answer for sub-question of (b)