ERIC Number: ED235242
Record Type: RIE
Publication Date: 1983-Aug
Reference Count: 0
Interval Estimation of [Omega Squared], the Proportion of Variance Associated with a Set of Fixed Treatments. Iowa Testing Programs Occasional Paper Number 32.
Feldt, Leonard S.; Melican, Gerald J.
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 treatments, the total sample size, and the mean squares between and within treatments. This paper presents tables which facilitate the construction of 90 or 95 percent confidence intervals for omega squared. (Author)
Publication Type: Reports - Research; Numerical/Quantitative Data
Education Level: N/A
Authoring Institution: Iowa Testing Programs, Iowa City.
Identifiers: Confidence Intervals (Statistics); Dependent Variables; Variance (Statistical)