Keywords: nonlinear regression, outlier
The data give the sound pressure of sonar signals ("clicks") from a dolphin at various ranges to target. The measurements were made off the coast of Iceland near Keflavik in 1998. The pressure measurement given is
raw pressure + a Range
where a is a known constant depending on the water density. Pressure is expected to increase with distance even after the adjustment.
|Range||Distance to dolphin in metres|
|SoundPressure||Water sound pressure adjusted for water density|
Data File (tab-delimited text)
|Marianne Rasmussen, Department of Biology, Odense University, Denmark.|
A simple power growth curve SoundPressure = a Rangeb seems adequate. There is an outlier.