library(ggplot2)
Grades <- c(84, 84, 95, 79, 77, 77, 69, 72, 78, 97, 50, 86, 83, 91, 72, 55,
72, 57, 86, 55, 91, 72)
summary(Grades)
## Min. 1st Qu. Median Mean 3rd Qu. Max.
## 50.0 72.0 77.5 76.5 85.5 97.0
c <- qplot(Grades, main = "Midterm 2 Grade Distribution", binwidth = 5)
c + geom_histogram(fill = "darkgray", color = "black", binwidth = 5)
| Problem | Concept | Class Average | Perfect Answers |
|---|---|---|---|
| 1 | Vector equation of a line | 82.95% | 63.64% |
| 2 | Tangent lines | 75.57% | 45.45% |
| 3 | Spherical coordinates | 82.95% | 59.09% |
| 4 | Spheres and lines | 64.77% | 31.82% |
| 5 | Parametric curves | 93.18% | 86.36% |
| 6 | Curves and derivatives | 79.17% | 31.82% |
| 7 | Position and acceleration | 85.23% | 59.09% |
| 8 | Unit normal and tangent vectors | 73.48% | 27.27% |
| 9 | Partial derivatives | 68.56% | 27.27% |
| 10 | Level curves and limits | 73.86% | 18.18% |
| 11 | Unit tangent and vector derivatives | 71.21% | 9.09% |