Results 81 to 90 of about 14,418,222 (275)

Normrank Correlations for Testing Associations and for Use in Latent Variable Models

Open Education Studies
Pearson’s correlation is widely used to test for an association between two variables and also forms the basis of several multivariate statistical procedures including many latent variable models. Spearman’s ρ\rho is a popular alternative.
Wright Daniel B.
doaj   +1 more source

Provable Sparse Tensor Decomposition

, 2016
We propose a novel sparse tensor decomposition method, namely Tensor Truncated Power (TTP) method, that incorporates variable selection into the estimation of decomposition components. The sparsity is achieved via an efficient truncation step embedded in
Cheng, Guang, Liu, Han, Lu, Junwei, Sun, Will Wei   +3 more
core   +1 more source

Precision, Reliability, and Effect Size of Slope Variance in Latent Growth Curve Models: Implications for Statistical Power Analysis

Frontiers in Psychology, 2018
Latent Growth Curve Models (LGCM) have become a standard technique to model change over time. Prediction and explanation of inter-individual differences in change are major goals in lifespan research. The major determinants of statistical power to detect
A. Brandmaier, Timo von Oertzen, Paolo Ghisletta, U. Lindenberger, C. Hertzog   +4 more
semanticscholar   +1 more source

Corrigendum: The Vacc-SeqQC project: Benchmarking RNA-Seq for clinical vaccine studies

Frontiers in Immunology, 2023
Johannes B. Goll, Steven E. Bosinger, Steven E. Bosinger, Steven E. Bosinger, Steven E. Bosinger, Travis L. Jensen, Hasse Walum, Tyler Grimes, Gregory K. Tharp, Muktha S. Natrajan, Muktha S. Natrajan, Azra Blazevic, Richard D. Head, Casey E. Gelber, Kristen J. Steenbergen, Nirav B. Patel, Patrick Sanz, Nadine G. Rouphael, Nadine G. Rouphael, Nadine G. Rouphael, Evan J. Anderson, Evan J. Anderson, Mark J. Mulligan, Mark J. Mulligan, Mark J. Mulligan, Mark J. Mulligan, Daniel F. Hoft, Daniel F. Hoft   +27 more
doaj   +1 more source

Efficient sampling of avian acoustic recordings: intermittent subsamples improve estimates of single species prevalence and total species richness

Avian Conservation and Ecology, 2018
Automated sound recording devices have become an important monitoring tool used to estimate species richness and abundance of birds in a variety of ecological and conservation studies.
Asher Cook, Stephen Hartley
doaj   +1 more source

The effect of number of clusters and cluster size on statistical power and Type I error rates when testing random effects variance components in multilevel linear and logistic regression models

Journal of Statistical Computation and Simulation, 2018
When using multilevel regression models that incorporate cluster-specific random effects, the Wald and the likelihood ratio (LR) tests are used for testing the null hypothesis that the variance of the random effects distribution is equal to zero.
P. Austin, G. Leckie
semanticscholar   +1 more source

LIFESPAN: A Tool for the Computer-Aided Design of Longitudinal Studies

Frontiers in Psychology, 2015
Researchers planning a longitudinal study typically search, more or less informally, a multivariate space of possible study designs that include dimensions such as the hypothesized true variance in change, indicator reliability, the number and spacing of
Andreas M Brandmaier, Timo evon Oertzen, Paolo eGhisletta, Paolo eGhisletta, Christopher eHertzog, Ulman eLindenberger, Ulman eLindenberger   +6 more
doaj   +1 more source

The case for increasing the statistical power of eddy covariance ecosystem studies: why, where and how?

Global Change Biology, 2017
Eddy covariance (EC) continues to provide invaluable insights into the dynamics of Earth's surface processes. However, despite its many strengths, spatial replication of EC at the ecosystem scale is rare.
T. Hill, Melanie Chocholek, R. Clement
semanticscholar   +1 more source

Effect size and statistical power in the rodent fear conditioning literature – A systematic review

bioRxiv, 2017
Proposals to increase research reproducibility frequently call for focusing on effect sizes instead of p values, as well as for increasing the statistical power of experiments.
C. F. D. Carneiro, T. Moulin, M. Macleod, O. Amaral   +3 more
semanticscholar   +1 more source

Adequate statistical power in clinical trials is associated with the combination of a male first author and a female last author

eLife, 2018
Clinical trials have a vital role in ensuring the safety and efficacy of new treatments and interventions in medicine. A key characteristic of a clinical trial is its statistical power.
Willem M Otte, Joeri K Tijdink, Paul L Weerheim, Herm J Lamberink, Christiaan H Vinkers   +4 more
doaj   +1 more source