Results 321 to 330 of about 8,447,173 (379)
Some of the next articles are maybe not open access.
An approximate distribution of estimates of variance components.
Biometrics, 1946F. E. Satterthwaite
semanticscholar +2 more sources
Statistical Analysis of Negative Variance Components in the Estimation of Variance Components
2008This paper analyzes the problem of negative variance components in the estimation of variance components from the statistical point of view, based on two kinds of estimators of variance components. Our analysis shows that too low relative accuracy and too large errors of the estimated variance components in comparison with the variance component itself
B. Gao, S. Li, W. Li, S. Li, X. Wang
openaire +1 more source
Transformations for components of variance and covariance
Biometrika, 1985Variance component models make various independence assumptions and typically assume effects are normally distributed. Here we assume that the data, possibly after suitable transformation, satisfy such a model. An analysis of transformations for balanced variance component models is presented, components of covariance being incorporated in the ...
openaire +2 more sources
Components of Variance in Polydrug Use
International Journal of the Addictions, 1981Forty-seven people who first attended any London drug clinic in 1971 were asked at what age they first used various drugs and how frequently each was used during every subsequent year. For age of first use, substantial significant variance components due both to drugs and subjects and to the interaction between them confirmed that certain substances ...
openaire +2 more sources
Variances of Estimates of Variance Components in a Three-Way Classification
Biometrics, 1966There are a number of procedures for estimating variance components in the case of unbalanced data by equating certain mean squares to their respective expectations. Variances of the resulting estimates are derived for one such procedure applied to a three-way classification. The variances are obtained by a procedure based on the work of Searle [1956].
openaire +2 more sources
Social determinants of health and US cancer screening interventions: A systematic review
Ca-A Cancer Journal for Clinicians, 2023Ariella R Korn
exaly