Results 21 to 30 of about 36,820 (296)

Analysis of covariance

Psychiatry and Behavioral Sciences, 2017
Analysis of Covariance (ANCOVA) is a statistical method which is an extension of ANOVA that provides a way of statistically controlling the linear effect of variables one does not want to examine in a study.
Selim Kılıc
doaj   +1 more source

Probabilistic Sensitivity Analysis With Dependent Variables: Covariance‐Based Decomposition of Hydrologic Models

Water Resources Research, 2023
Variance‐based analysis has emerged as method of choice for quantifying the sensitivity of the output, y, of a scalar‐valued square‐integrable function, f ∈ L2( χ $\boldsymbol{\upchi }$ ), to its d ≥ 1 input variables, x = {x1, …, xd}, with support x∈χ ...
Yifu Gao, Abdullah Sahin, J. Vrugt
semanticscholar   +1 more source

Minimum number of measurements for an accurate evaluation of growth traits in eucalyptus species [PDF]

Revista Ceres
The objective of this research was to identify the most effective method to estimate the repeatability coefficients in species of eucalyptus and to predict the minimum number of measurements necessary for growth traits.
Janielle de Oliveira Garcia, Marcus Vinicius Vieira Borges, Larissa Pereira Ribeiro Teodoro, Gileno Brito de Azevedo, Glauce Taís de Oliveira Sousa Azevedo, Paulo Eduardo Teodoro   +5 more
doaj   +1 more source

A robust effect size measure for MANOVA with non-normal and non-homogenous data

Methodological Innovations, 2021
A common research question in psychology entails examining whether significant group differences (e.g. male and female) can be found in a list of numeric variables that measure the same underlying construct (e.g. intelligence).
Johnson Ching-Hong Li, Marcello Nesca, Rory Michael Waisman, Yongtian Cheng, Virginia Man Chung Tze   +4 more
doaj   +1 more source

Statistical analysis of two arm randomized pre-post designs with one post-treatment measurement

BMC Medical Research Methodology, 2021
Background Randomized pre-post designs, with outcomes measured at baseline and after treatment, have been commonly used to compare the clinical effectiveness of two competing treatments.
Fei Wan
doaj   +1 more source

Genetic analysis of environmental variation [PDF]

, 2010
Environmental variation (V-E) in a quantitative trait - variation in phenotype that cannot be explained by genetic variation or identifiable genetic differences - can be regarded as being under some degree of genetic control. Such variation may be either
HAN A. MULDER, Hill, William G., WILLIAM G. HILL, Mulder, H.A., Mulder, Han A., Hill, W.G.   +5 more
core   +1 more source

Sex proportion as a covariate increases the statistical test power in growth performance based experiments using as-hatched broilers.

PLoS ONE, 2023
The availability of sexed day-old broiler chicks is becoming an issue as feather sexing is no longer possible. This has great implications for broiler researchers as the use of randomly distributed mixed-sex birds may result in a greater between-pen ...
Ashley D England, Sosthene Musigwa, Alip Kumar, Ali Daneshmand, Kosar Gharib-Naseri, Sarbast K Kheravii, Gene Pesti, Shu-Biao Wu   +7 more
doaj   +1 more source

A short neuropsychological evaluation of patients with primary Sjögren's syndrome

Arquivos de Neuro-Psiquiatria, 2014
Objective: To investigate cognitive deficits in patients with primary Sjögren’s syndrome (PSS). Method: Eighteen patients with PSS, aged between 25 and 61 years, were subjected to a short neuropsychological battery and compared with 18 patients with ...
Dóra-Neide Rodrigues, João Sergio Ignácio Hora, Maria Cecília Fonseca Salgado, Renata Alves Paes, Claudia Cristina Ferreira Vasconcelos, J. Landeira-Fernandez, Regina Maria Papais Alvarenga   +6 more
doaj   +1 more source

Repetibilidade da produção de sementes em clones de guaraná Seed yield repeatability of guarana clones

Pesquisa Agropecuária Brasileira, 2009
O objetivo deste trabalho foi avaliar a repetibilidade da produção de sementes 27 clones guaraná (Paullinia cupana). Os clones foram avaliados em dez ensaios instalados em blocos ao acaso com duas repetições e três plantas por parcela, com espaçamento de
Firmino José do Nascimento Filho, André Luiz Atroch, Cosme Damião Cruz, Pedro Crescêncio Souza Carneiro   +3 more
doaj   +1 more source

The Analysis of Very Small Samples of Repeated Measurements [PDF]

The statistical analysis of repeated measures or longitudinal data always requires the accommodation of the covariance structure of the repeated measurements at some stage in the analysis.
Skene, Simon Scott
core   +1 more source