College_grades {mosaicModel}

Grades at a small college

Description

These are the actual grades for 400+ individual students in the courses they took at a small, liberal-arts college in the midwest US. All the students graduated in 2006. Each row corresponds to a single student in a single course. The data have been de-identified by translating the student ID, the instructor ID, and the name of the department. Typically a graduating student has taken about 32 courses. As another form of de-identification, only half of the courses each student, selected randomly, are included. Only courses with 10 or more students enrolled were included.

Usage

data(College_grades)

Format

A data frame with 6146 Grades for 443 students.

• grade The letter grade for the student in this course: A is the highest.

• sessionID An identifier for the course taken. Courses offered multiple times in one semester or across semesters have individual IDs.

• sid The student ID

• dept The department in which the course was offered. 100 is entry-level, 200 sophomore-level, 300 junior-level, 400 senior-level.

• enroll Student enrollment in the course. This includes students who are not part of this sample.

• iid Instructor ID

• gradepoint A translation of the letter grade into a numerical scale. 4 is high. Some letter grades are not counted in a student's gradepoint average. These have NA for the gradepoint.

Source

The data were helpfully provided by the registrar of the college with the proviso that the de-identification steps outlined above be performed.

Examples

## Not run: 
GPA <- lm(gradepoint ~ sid - 1, data = College_grades)

## End(Not run)