Data for Exercise 1.128
A data frame/tibble with 39 observations on two variables
the year of the race
the winners average speed (in mph)
The World Almanac and Book of Facts, 2000, p. 1004.
Kitchens, L. J. (2003) Basic Statistics and Data Analysis. Pacific Grove, CA: Brooks/Cole, a division of Thomson Learning.
plot(speed ~ year, data = Indiapol, type = "b")