Correlation

In a study of ground motion caused by earthquakes, the peak velocity (in #m/s#) and peak acceleration (in #m/s^2#) were recorded for five earthquakes.

The results are contained in the following data table, which may be pasted into #\mathrm{R}#:

Data = data.frame(
Velocity = c(1.54,1.60,0.95,1.30,2.92), 
Acceleration = c(7.64,7.04,8.04,6.57,4.25)
)

Make a scatterplot of Velocity against Acceleration. Based on the scatterplot, is there any clear reason why the sample correlation coefficient would not be an appropriate summary of the association between the peak velocity and the peak acceleration?

[A, SfS] Chapter 8: Correlation and Regression: 8.1: Correlation

Correlation