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Elephant social groups in Mikumi National Park

You are observing the different types of elephant social groups in the Mikumi National Park in Tanzania in the dry and wet seasons. You wish to test whether the frequency of the groups changes with season.

Note: These data are in their “tallied” up form (see starting point).

 

Contingency table glossary item: Contingency table  (4 x 2) for Mikumi National Park elephant data (with expected values in brackets).
  Solitary bull Bull group Family group Family group with bull Total
Dry season 43
(60.05)		 4
(9.34)		 196
(173.93)		 7
(6.67)		 250
Wet season 92
(74.95)		 17
(11.66)		 195
(217.07)		 8
(8.33)		 312
Total 135 21 391 15 562

Expected frequency for a given group type is calculated by mulitplying the row total by the column total and divided by the grand total.