The analysis of contact sampling data

Piet de Jong, Lonnie W. Aarssen, Roy Turkington*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


Use of the chi-square statistic for investigating interspecific association has been incorrectly applied to the contact sampling method because of an invalid probability argument. The usual method of calculating expected frequencies leads to a large overestimation and hence bias towards negative association. A correct method of analysis is presented and discussed.

Original languageEnglish
Pages (from-to)322-324
Number of pages3
Issue number3
Publication statusPublished - Jan 1980
Externally publishedYes


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