satgpa: SAT and GPA data
In tessington/qsci381: Data used in QSCI 381, University of Washington

Description Usage Format Source References Examples

SAT and GPA data for 1000 students at an unnamed college.

satgpa

A data frame with 1000 observations on the following 6 variables.

sex: Gender of the student.
sat_v: Verbal SAT percentile.
sat_m: Math SAT percentile.
sat_sum: Total of verbal and math SAT percentiles.
hs_gpa: High school grade point average.
fy_gpa: First year (college) grade point average.

Educational Testing Service originally collected the data.

https://www.dartmouth.edu/~chance/course/Syllabi/Princeton96/Class12.html

library(ggplot2)
library(broom)

# Verbal scores
ggplot(satgpa, aes(x = sat_v, fy_gpa)) +
  geom_point() +
  geom_smooth(method = "lm") +
  labs(
    x = "Verbal SAT percentile",
    y = "First year (college) grade point average"
    )

mod <- lm(fy_gpa ~ sat_v, data = satgpa)
tidy(mod)

# Math scores
ggplot(satgpa, aes(x = sat_m, fy_gpa)) +
  geom_point() +
  geom_smooth(method = "lm") +
  labs(
    x = "Math SAT percentile",
    y = "First year (college) grade point average"
    )

mod <- lm(fy_gpa ~ sat_m, data = satgpa)
tidy(mod)