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Download full textFeldt, Leonard S.; Melican, Gerald J. – 1983
Experimenters sometimes wish to estimate for a particular dependent variable the proportion of total group variance that is associated with mean differences among fixed treatments or subject classifications. Hays (1981) represents this proportion by the parameter omega squared. A point estimate may be easily computed as a function of the number of…
Descriptors: Analysis of Variance, Data, Estimation (Mathematics), Mathematical Formulas
Wilson, Mark – 1983
This study investigates the accuracy of the Woodruff-Causey technique for estimating sampling errors for complex statistics. The technique may be applied when data are collected by using multistage clustered samples. The technique was chosen for study because of its relevance to the correct use of multivariate analyses in educational survey…
Descriptors: Data Collection, Educational Research, Estimation (Mathematics), Guidelines
