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Application of student's t-test, analysis of variance, and covariance

open access: yesAnnals of Cardiac Anaesthesia, 2019
Student's t test (t test), analysis of variance (ANOVA), and analysis of covariance (ANCOVA) are statistical methods used in the testing of hypothesis for comparison of means between the groups.
Prabhaker Mishra   +4 more
doaj   +2 more sources

Analysis of covariance

open access: yesPsychiatry 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   +3 more sources

Analysis of covariance [PDF]

open access: yesAmerican Journal of Orthodontics and Dentofacial Orthopedics, 2016
N. Pandis
semanticscholar   +4 more sources

Model‐assisted analysis of covariance estimators for stepped wedge cluster randomized experiments [PDF]

open access: yesScandinavian Journal of Statistics, 2023
Stepped wedge cluster randomized experiments (SW‐CREs) represent a class of unidirectional crossover designs. Although SW‐CREs have become popular, definitions of estimands and robust methods to target estimands under the potential outcomes framework ...
Xinyuan Chen, Fan Li
semanticscholar   +1 more source

Winter Wheat Cultivar Recommendation Based on Expected Environment Productivity

open access: yesAgriculture, 2021
We used 5 years of data from multi-environmental trials conducted in Poland to assess average winter wheat yield based on selected environmental factors to recommend cultivars depending on their performance in environments of different productivity ...
Marzena Iwańska   +3 more
doaj   +1 more source

Accounting for Patient Engagement in Randomized Controlled Trials Evaluating Digital Cognitive Behavioral Therapies

open access: yesApplied Sciences, 2022
Background: Cognitive behavioral therapy (CBT) can be a useful treatment option for various mental health disorders. Modern advances in information technology and mobile communication enable delivery of state-of-the-art CBT programs via smartphones ...
Oleksandr Sverdlov, Yevgen Ryeznik
doaj   +1 more source

Nonparametric analysis of covariance [PDF]

open access: yesThe Annals of Statistics, 2001
In the problem of testing the equality of k regression curves from independent samples we discuss three methods using nonparametric estimation techniques of the regression function. The first test is based on a linear combination of estimators for the integrated variance function in the individual samples and in the combined sample. The second approach
Dette, Holger, Neumeyer, Natalie
openaire   +4 more sources

Evaluation of Randomised Controlled Trials Published in Indian Specialty Dental Journals for Statistical Testing of Baseline Differences: A Meta-Epidemiological Study

open access: yesIndian Journal of Dental Research, 2023
Background: In randomised controlled trials (RCTs), the application of a test of significance to compare the baseline differences between the intervention groups is a common practice, though it has been condemned by many researchers.
Mahesh R. Khairnar   +5 more
doaj   +1 more source

The impact of different approaches to the teaching of Grade 5 fraction by three experienced teachers

open access: yesSouth African Journal of Childhood Education, 2021
Background: Many teachers for different reasons recognise the teaching of fraction as a challenge. This research explored the teaching of fraction in Grade 5 by three experienced teachers (Ben, Greg and Will) in KwaZulu-Natal province, South Africa. Aim:
Ifunanya J.A. Ubah
doaj   +1 more source

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