ex1509: Sunspot Counts for 1749-1948
In Sleuth2: Data Sets from Ramsey and Schafer's "Statistical Sleuth (2nd Ed)"

Description Usage Format Source References Examples

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.

1	str(ex1509)

Sleuth2 documentation built on May 2, 2019, 7:01 a.m.

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