نتایج جستجو برای: correlation tests

تعداد نتایج: 705421  

2017
Payam Heydari Sakineh Varmazyar Ali Safari Variani Fariba Hashemi Seyed Sajad Ataei

Background and aim Test of maximal oxygen consumption is the gold standard for measuring cardio-pulmonary fitness. This study aimed to determine correlation of Gerkin, Queen's College, George, and Jackson methods in estimating maximal oxygen consumption, and demographic factors affecting maximal oxygen consumption. Methods This descriptive cross-sectional study was conducted in a census of me...

Journal: :Inf. Sci. 2013
Ulrich Bodenhofer Martin Krone Frank Klawonn

Rank correlation measures are intended to measure to which extent there is a monotonic association between two observables. While they are mainly designed for ordinal data, they are not ideally suited for noisy numerical data. In order to better account for noisy data, a family of rank correlation measures has previously been introduced that replaces classical ordering relations by fuzzy relati...

Journal: :تحقیقات مالی 0
دکتر محمد نمازی زکیه شوشتریان

the purpose of this article is to present the summary of all the research done on the weak form of efficient market hypothesis. these tests include normality test of return distribution, auto correlation test. run test and filter tests.

2015
David Trafimow

Based on a classical true score theory (classical test theory, CTT) equation, indicating that as the observed correlation between two tests increases, the reliability of the difference scores decreases, researchers have concluded that difference scores are unreliable. But CTT shows that the reliabilities of the two tests and the true correlation between them influence the observed correlation a...

Journal: :Computational Statistics & Data Analysis 2007
Dayanand N. Naik Amal Helu

The three likelihood-based tests, namely, likelihood ratio test, Rao score test, and Wald test and two more asymptotic tests which use Srivastava’s estimator of intraclass correlation coefficient are considered to test the null hypothesis of equality of intraclass correlation coefficients when the families have unequal number of children. Methods are illustrated on Galton’s data set. Using simu...

Journal: :Bulletin of the World Health Organization 2006
April D Kimmel Elena Losina Kenneth A Freedberg Sue J Goldie

We conducted a systematic review on the performance of diagnostic tests for clinical and laboratory monitoring of HIV-infected adults in developing countries. Diagnostic test information collected from computerized databases, bibliographies and the Internet were categorized as clinical (non-laboratory patient information), immunologic (information from immunologic laboratory tests), or virologi...

Journal: :The British journal of ophthalmology 1995
S T Ruben G B Arden F O'Sullivan R A Hitchings

AIMS Both pattern electroretinogram and peripheral colour contrast thresholds have been shown to be abnormal in glaucoma and ocular hypertension. This study evaluates each of these tests as tools for the early diagnosis of glaucoma, compares and contrasts the results, and examines the relation between the two tests in a large cohort of ocular hypertensive patients. METHODS Transient and stead...

Journal: :CoDAS 2013
Cristiane Lima Nunes Liliane Desgualdo Pereira Graça Simões de Carvalho

PURPOSE The objective of this research was to assess the auditory abilities of Portuguese children and compare such abilities to the score of the Scale of Auditory Behaviors (SAB). METHODS Fifty-one children were evaluated with audiometry, speech audiometry, acoustic immittance measures, and eight behavioral tests involving dichotic listening, monotic listening, temporal processing, and sound...

2013
Cristiane Lima Nunes Liliane Desgualdo Pereira Graça Simões de Carvalho

Purpose: The objective of this research was to assess the auditory abilities of Portuguese children and compare such abilities to the score of the Scale of Auditory Behaviors (SAB). Methods: Fifty-one children were evaluated with audiometry, speech audiometry, acoustic immittance measures, and eight behavioral tests involving dichotic listening, monotic listening, temporal processing, and sound...

2008
Mark Voortman Marek J. Druzdzel

Constraint-based causal discovery algorithms, such as the PC algorithm, rely on conditional independence tests and are otherwise independent of the actual distribution of the data. In case of continuous variables, the most popular conditional independence test used in practice is the partial correlation test, applicable to variables that are multivariate Normal. Many researchers assume multivar...

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