ex1509 {Sleuth2} | R Documentation |
Time series data set of annual counts of sunspots.
ex1509
A data frame with 200 observations on the following 2 variables.
Year
year
Spots
number of sunspots
Ramsey, F.L. and Schafer, D.W. (2002). The Statistical Sleuth: A Course in Methods of Data Analysis (2nd ed), Duxbury.
Waldmeier, M. (1961). The Sunspot Activity in the Years 1610–1960, Federal Observatory, Zurich.
str(ex1509)