The data set quake contains the strengths of earthquakes measured
at the earth's continental plates. Much of the earth's seismic activity
is due to motion of the large plates that make up the crust of the earth.
Earthquakes occur when a buildup in tension between two layers of rock is
suddenly released. For this reason many earthquakes occur at plate
boundaries.
A data frame with 496 observations on the following 5 variables.
: latitude of the event
: longitude of the event
: direction of earthquake
: strength of the earthquake (Richter scale)
: numerical code for plate boundary