Wolfer sunspot numbers from 1700 through 2000

Data for Example 1.7

Sunspot

Format

A data frame/tibble with 301 observations on two variables

year

year

sunspots

average number of sunspots for the year

References

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

Examples

plot(sunspots ~ year, data = Sunspot, type = "l")

if (FALSE) {
library(ggplot2)
lattice::xyplot(sunspots ~ year, data = Sunspot, 
                main = "Yearly sunspots", type = "l")
lattice::xyplot(sunspots ~ year, data = Sunspot, type = "l", 
                main = "Yearly sunspots", aspect = "xy")
ggplot2::ggplot(data = Sunspot, aes(x = year, y = sunspots)) + 
           geom_line() + 
           theme_bw()
}