exam_grades: Exam and course grades for statistics students
In tessington/qsci381: Data used in QSCI 381, University of Washington

Description Usage Format Examples

Grades on three exams and overall course grade for 233 students during several years for a statistics course at a university.

1	exam_grades

A data frame with 233 observations, each representing a student.

semester: Semester when grades were recorded.
sex: Sex of the student as recorded on the university registration system: Man or Woman.
exam1: Exam 1 grade.
exam2: Exam 2 grade.
exam3: Exam 3 grade.
course_grade: Overall course grade.

library(ggplot2)
library(dplyr)

# Course grade vs. each exam
ggplot(exam_grades, aes(x = exam1, y = course_grade)) +
  geom_point()

ggplot(exam_grades, aes(x = exam2, y = course_grade)) +
  geom_point()

ggplot(exam_grades, aes(x = exam2, y = course_grade)) +
  geom_point()

# Semester averages
exam_grades %>%
  group_by(semester) %>%
  summarise(across(exam1:course_grade, mean, na.rm = TRUE))