Glossary

Accessible population—A subset of a target population that is reachable by the researcher and from which the sample is drawn.

Adaptation—The process by which an organisation, system, or organism is fitted to its environment.

Ad hoc sample—Sample of participants drawn from an accessible population. Characteristics of the ad hoc sample must be described to define the limits of generalisability.

Alpha level (α level)—Level of type I error (the probability of rejecting the null hypothesis when the null hypothesis is true).

Alternate courses of action—Different ways of finding solutions to a problem in the process of decision-making.

Alternative hypothesis—Opposite of null hypothesis (notation: HA).

Analysis of covariance (ANCOVA)—Statistical ...

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