ERIC Number: EJ573523
Record Type: CIJE
Publication Date: 1998
Effects of Sample Size on the Representativeness of Observational Data Used in Evaluation.
Moore, Steven R.
Education and Treatment of Children, v21 n2 p209-26 May 1998
This study examined the representativeness of a time-sampling observational procedure to evaluate students with behavior disorders by examining error in samples of varying size in comparison to a criterion measure. Analyses of both single subject and multiple subject designs suggested that samples of 16 to 20 observational sessions of eight-minute duration were necessary to obtain representative data. (Author/DB)
Publication Type: Journal Articles; Reports - Evaluative
Education Level: N/A
Authoring Institution: N/A