Fisher exact test

a statistical procedure to determine whether two categorical variables are related. Appropriate for small samples, it examines the associations between the rows and columns of data in a fourfold (2 × 2) contingency table. For example, the Fisher exact test could be used to assess whether there is a relationship between gender (male or female) and pizza topping preference (cheese or multitopping) in a group of 20 individuals. [Ronald Aylmer Fisher]

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Psychology term of the day

February 17th 2025

calmodulin

n. a protein that binds calcium ions in many calcium-regulated processes in living cells. For example, calmodulin is involved in muscle contraction and in the cascade of neurochemical events that underlies memory formation.