Description

Data set with the numbers of Atlantic Basin tropical storms and hurricanes for each year from 1950–1997. The variable storm index is an index of overall intensity of hurricane season. Also listed are whether the year was a cold, warm or neutral El Nino year and a variable indicating whether West Africa was wet or dry that year.

Usage

Format

A data frame with 48 observations on the following 7 variables.

Year

year

ElNino

a factor with levels "cold", "neutral" and "warm"

Temperature

numeric variable with values -1 if ElNino is "cold", 0 if "neutral" and 1 if "warm"

WestAfrica

numeric variable indicating whether West Africa was wet (1) or dry (0)

Storms

number of storms

Hurricanes

number of hurricanes

StormIndex

index of overall intensity of hurricane season

Source

Ramsey, F.L. and Schafer, D.W. (2002). The Statistical Sleuth: A Course in Methods of Data Analysis (2nd ed), Duxbury.

References

Data were gathered by William Gray of Colorado State University and reported on USA Today weather page: http://www.usatoday.com/weather/whurnum.htm

Examples