exam_grades: Exam and course grades for statistics students

In openintro: Data Sets and Supplemental Functions from 'OpenIntro' Textbooks and Labs

Exam and course grades for statistics students

Description

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

Usage

exam_grades

Format

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.

Examples

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))

openintro documentation built on Sept. 1, 2022, 9:06 a.m.