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Components of variance [PDF]

open access: yesDiagnostic Histopathology, 2016
Components of variance have a long history and find application in all areas of scientific investigation. This review introduces components of variance and their importance firstly by examples on blood pressure, proteomic data, breath analysers and esophageal pH monitoring devices.
Solomon, P., Stanford, T.
openaire   +4 more sources

Genetic heterogeneity of residual variance - estimation of variance components using double hierarchical generalized linear models [PDF]

open access: yesGenetics Selection Evolution, 2010
Background The sensitivity to microenvironmental changes varies among animals and may be under genetic control. It is essential to take this element into account when aiming at breeding robust farm animals.
Fikse Freddy   +4 more
doaj   +2 more sources

On Quadratic Estimates of Variance Components [PDF]

open access: yesThe Annals of Mathematical Statistics, 1954
In this paper quadratic estimates of variance components are considered. For the general balanced nested classification with no specific distributions assumed, it is shown that the quadratic estimate which is unbiased and which has minimum variance is given by the analysis of variance method of estimating the variance components.
Graybill, Franklin
openaire   +5 more sources

Non-Negative Estimators of Variance Components for Balanced Data [PDF]

open access: yesThe Egyptian Statistical Journal, 1982
The purpose of this article has been to summarize various non-negative estimators of variance components - both classical as well as Bayesian, proposed in the literature during recent years, for three widely applicable random effects models.
Hardeo Sahai
doaj   +1 more source

GENETIC PARAMETERS OF SOME SORGHUM (SORGHUM BICOLOR (L.) MOENCH) GENOTYPES UNDER WATER DEFICIT STRESS [PDF]

open access: yesEgyptian Journal of Desert Research, 2020
Sorghum (Sorghum bicolor(L.) Moench) has a mighty adaptation possibility, which are important parameters of genotypes growing in severe conditions. This study focused on the differential responses of six genotypes under two levels of water deficit (20 ...
Ayman Badran
doaj   +1 more source

Non-homogeneity of variance components from spatially nested sampling of the soil [PDF]

open access: yes, 2009
Spatially nested sampling and the associated nested analysis of variance by spatial scale is a well-established methodology for the exploratory investigation of soil variation over multiple, disparate scales. The variance components that can be estimated
Corstanje, R., Lark, R. M.
core   +1 more source

A variance-components analysis for the longitude-network adjustment [PDF]

open access: yesSerbian Astronomical Journal, 2001
The problem of weights in the task of longitude-network adjustment has not been solved yet because the structure of the observational variances is unknown.
Perović G., Cvetković Z.
doaj   +1 more source

Application of Generalizability Theory in Estimating Variance Components in Senior Secondary School Certificate Examination Physics Essay Questions

open access: yesJournal of Computer Adaptive Testing in Africa, 2022
This study applied Generalizability Theory to estimate variance components in Senior Secondary School Certificate Examination (SSSCE) Physics essay questions using a two-facet fully crossed G-study and D-study design.
Blessing Iheanyichukwu Nwuchegbu
doaj   +1 more source

Estimation of genetic variation in residual variance in female and male broiler chickens [PDF]

open access: yes, 2008
In breeding programs, robustness of animals and uniformity of end product can be improved by exploiting genetic variation in residual variance. Residual variance can be defined as environmental variance after accounting for all identifiable effects.
Mulder, H. A.   +6 more
core   +1 more source

The genetic basis of inheritance of plant height in maize [PDF]

open access: yesJournal of Agricultural Sciences (Belgrade), 2015
The aim of this study, on the grounds of direct and reciprocal diallel crossing of five inbred lines of maize, was to determine: variability, heterosis, combining ability and genetic basis of plant height inheritance. The experiment was based on
Radanović Slavko N.   +5 more
doaj   +1 more source

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