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Activities of Dolphin Groups

Keywords: contingency table


Groups of dolphins were observed off the coast of Iceland near Keflavik in 1998. The data here give the time of the day and the main activity of the group, whether travelling quickly, feeding or socializing. The dolphin groups varied in size - usually feeding or socializing groups were larger than travelling groups.

Variable Description

Activity Main activity of group: travelling (Travel), feeding (Feed) or socializing (Social)
Period Time of the day: Morning, Noon, Afternoon or Evening
Groups Number of groups observed


Data File (tab-delimited text)


Marianne Rasmussen, Department of Biology, University of Southern Denmark, Odense, Denmark.


The behaviour patterns are different at different times of the day.



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