Yearsunspot: Monthly sunspot activity from 1974 to 2000

Description Usage Format Source References Examples

Description

Data for Exercise 2.7

Usage

1

Format

A data frame/tibble with 252 observations on two variables

number

average number of sunspots

year

date

Source

NASA/Marshall Space Flight Center, Huntsville, AL 35812.

References

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

Examples

1
plot(number ~ year, data = Yearsunspot)

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