earthquake {riv}R Documentation

Alaskan earthquakes data

Description

The dataset contains information about 62 Alaskan earthquakes that occured between 1969-1978.

Usage

data(earthquake)

Format

A data frame with 62 observations on the following 3 variables.

Y
a numeric vector of the logarithm of the seismogram amplitude of 20 second waves.
X
a numeric vector of the logarithm of the seismogram amplitude of longitudinal body waves.
W
a numeric vector of the logarithm of maximum seismogram trace amplitude at short distance.

Source

FULLER,W.A. (1987). Measurement Error Models. Wiley, New York.

References

COHEN-FREUE,G.V. and ZAMAR,R.H. (2005). A Robust Instrumental Variables Estimator.

Examples

data(earthquake)
plot(earthquake[,2],earthquake[,1],xlab="X",ylab="Y") 

[Package riv version 1.0-0 Index]