Date of Award
Master of Science in Psychology
A study into the factors that affect power in an analysis of covariance (ANCOVA) design were examined. Four factors - sample size, significance level, dependent variable-covariate correlations and homogeneity of regression - were varied in a population study. Results indicate that power increased when the dependent variable-covariate correlations increased and when sample size increased. Power also increased when a less stringent alpha level was used. Homogeneity of regression did not effect power. Implications and recommendations for the applied researcher are discussed.
Tvedt, Valerie Maria, "Some factors that effect [sic] statistical power in ANCOVA: a population study" (2000). Theses Digitization Project. 1764.