Improvement scores for identical twins taught music recognition by two techniques
Data for Exercise 7.59
Music
A data frame/tibble with 12 observations on three variables
a numeric vector measuring the improvement scores on a music recognition test
a numeric vector measuring the improvement scores on a music recognition test
method1 - method2
Kitchens, L. J. (2003) Basic Statistics and Data Analysis. Pacific Grove, CA: Brooks/Cole, a division of Thomson Learning.
qqnorm(Music$differ)
qqline(Music$differ)
shapiro.test(Music$differ)
t.test(Music$method1, Music$method2, paired = TRUE)
# Or
t.test(Music$differ)
## Not run:
library(ggplot2)
ggplot2::ggplot(data = Music, aes(x = differ)) +
geom_dotplot() +
theme_bw()
## End(Not run)Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.