Math proficiency and SAT scores by states
Data for Exercise 9.24, Example 9.1, and Example 9.6
Mathpro
A data frame/tibble with 51 observations on four variables
a factor with levels Conn,
D.C., Del, Ga, Hawaii, Ind, Maine,
Mass, Md, N.C., N.H., N.J., N.Y.,
Ore, Pa, R.I., S.C., Va, and Vt
SAT math scores for high school seniors
math proficiency scores for eigth graders
a numeric vector
National Assessment of Educational Progress and The College Board.
Kitchens, L. J. (2003) Basic Statistics and Data Analysis. Pacific Grove, CA: Brooks/Cole, a division of Thomson Learning.
model <- lm(sat_math ~ profic, data = Mathpro) plot(sat_math ~ profic, data = Mathpro, ylab = "SAT", xlab = "proficiency") abline(model, col = "red") summary(model) rm(model)
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