Grades {PASWR}

GPA and SAT Scores

Description

The admissions committee of a comprehensive state university selected at random the records of 200 second semester freshmen. The results, first semester college GPA and SAT scores, are stored in the data frame Grades. Data are used in Example 12.6.

Format

A data frame with 200 observations on the following 2 variables:

sat

SAT score

gpa

grade point average

Source

Ugarte, M. D., Militino, A. F., and Arnholt, A. T. (2008) Probability and Statistics with R. Chapman & Hall/CRC.

Examples

# traditional scatterplot
plot(gpa ~ sat, data = Grades)
# trellis scatterplot
xyplot(gpa ~ sat, data = Grades, type=c("p", "smooth"))