Average teacher's salaries across the states in the 70s 80s and 90s

Source: R/BSDA-package.R

Data for Exercise 5.114

Teacher

Format

A data frame/tibble with 51 observations on three variables

state

U.S. state

year

academic year

salary

avaerage salary (in dollars)

Source

National Education Association.

References

Kitchens, L. J. (2003) Basic Statistics and Data Analysis. Pacific Grove, CA: Brooks/Cole, a division of Thomson Learning.

Examples


par(mfrow = c(3, 1))
hist(Teacher$salary[Teacher$year == "1973-74"],
     main = "Teacher salary 1973-74", xlab = "salary",
     xlim = range(Teacher$salary, na.rm = TRUE))
hist(Teacher$salary[Teacher$year == "1983-84"],
     main = "Teacher salary 1983-84", xlab = "salary",
     xlim = range(Teacher$salary, na.rm = TRUE))
hist(Teacher$salary[Teacher$year == "1993-94"],
     main = "Teacher salary 1993-94", xlab = "salary",
     xlim = range(Teacher$salary, na.rm = TRUE))

par(mfrow = c(1, 1))
if (FALSE) {   
library(ggplot2)                    
    ggplot2::ggplot(data = Teacher, aes(x = salary)) + 
               geom_histogram(fill = "purple", color = "black") +  
               facet_grid(year ~ .) + 
               theme_bw()
}