An exact permutation method for testing any effect in balanced and unbalanced fixed effect ANOVA

Kherad-Pajouh, Sara; Renaud, Olivier

doi:10.1016/j.csda.2010.02.015

Cited by 48 publications

(45 citation statements)

References 13 publications

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“…The good behavior of the procedure using the F-statistic in the present simulation study contrasts the progressive behavior Kherad-Pajouh and Renaud (2010) found in some cases. However, Kherad-Pajouh and Renaud (2010) used even smaller sample sizes.…”

Section: Discussioncontrasting

confidence: 75%

“…The first aspect is the units that are actually permuted. Some procedures permute the original data whereas others first calculate residuals and permute these subsequently (see e.g., Anderson and ter Braak 2003;Manly 2007;Kherad-Pajouh and Renaud 2010;Pauly et al 2014). The second aspect is the test statistic: Some authors simply use the mean differences between the levels of factors to be compared or an equivalent test statistic (Basso et al 2009), others recommend the use of an adequate pivotal statistic, like an F-statistic in parametric ANOVA (Anderson and ter Braak 2003) or some kind of studentization (Pauly et al 2014).…”

Section: Introductionmentioning

confidence: 98%

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A comparison of different synchronized permutation approaches to testing effects in two-level two-factor unbalanced ANOVA designs

Hahn

Salmaso

2015

Stat Papers

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Analysis of variance (ANOVA) is used to compare the means of various samples. Parametric ANOVA approaches assume normally distributed error terms within subsamples. Permutation tests like synchronized permutation tests are computationally intensive and distribution free procedures. Hence they overcome the limitationsofparametricmethods.Unbalanceddesignswithdifferingsubsamplesizes are quite frequent in various disciplines. There is a broad literature about unbalanced designs and parametric testing. For permutation tests this topic received some attentionrecently.Thispaperextendsthesynchronizedpermutationmethodtounbalanced two-level ANOVA designs. A simulation study investigates the behavior of different procedures for various types of unbalanced designs. It compares the results to other permutation approaches. The synchronized permutation method yields comparable results to the best performing competing permutation approaches. However the approach is limited to certain kinds of unbalanced designs

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Section: Discussioncontrasting

confidence: 75%

Section: Introductionmentioning

confidence: 98%

A comparison of different synchronized permutation approaches to testing effects in two-level two-factor unbalanced ANOVA designs

Hahn

Salmaso

2015

Stat Papers

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“…First, the permutation test is a suitable for small sample analysis and is distribution free [63], [64], [65], [66]. Second, the permutation test can correct Type 1 error (false positive) [67], [68].…”

Section: Methodsmentioning

confidence: 99%

Brain Training Game Boosts Executive Functions, Working Memory and Processing Speed in the Young Adults: A Randomized Controlled Trial

et al. 2013

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BackgroundDo brain training games work? The beneficial effects of brain training games are expected to transfer to other cognitive functions. Yet in all honesty, beneficial transfer effects of the commercial brain training games in young adults have little scientific basis. Here we investigated the impact of the brain training game (Brain Age) on a wide range of cognitive functions in young adults.MethodsWe conducted a double-blind (de facto masking) randomized controlled trial using a popular brain training game (Brain Age) and a popular puzzle game (Tetris). Thirty-two volunteers were recruited through an advertisement in the local newspaper and randomly assigned to either of two game groups (Brain Age, Tetris). Participants in both the Brain Age and the Tetris groups played their game for about 15 minutes per day, at least 5 days per week, for 4 weeks. Measures of the cognitive functions were conducted before and after training. Measures of the cognitive functions fell into eight categories (fluid intelligence, executive function, working memory, short-term memory, attention, processing speed, visual ability, and reading ability).Results and DiscussionOur results showed that commercial brain training game improves executive functions, working memory, and processing speed in young adults. Moreover, the popular puzzle game can engender improvement attention and visuo-spatial ability compared to playing the brain training game. The present study showed the scientific evidence which the brain training game had the beneficial effects on cognitive functions (executive functions, working memory and processing speed) in the healthy young adults.ConclusionsOur results do not indicate that everyone should play brain training games. However, the commercial brain training game might be a simple and convenient means to improve some cognitive functions. We believe that our findings are highly relevant to applications in educational and clinical fields.Trial RegistrationUMIN Clinical Trial Registry 000005618.

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“…To quantify the contribution of the studied process parameters, ANOVA [46,47] of input variables influence has been performed at each multiscale response of surface quality (i.e. at each scale "i" of the decomposition) using XLSTAT software.…”

Section: Multiscale Contribution Rate Of Process Parameters To the Sumentioning

confidence: 99%

Mechanics of material removal when cutting natural fiber reinforced thermoplastic composites

Chegdani

Mansori

2018

Polymer Testing

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is an open access repository that collects the work of Arts et Métiers ParisTech researchers and makes it freely available over the web where possible. This is an author-deposited version published in: https://sam.ensam.eu Handle ID A B S T R A C TThis paper aims to study the machinability of natural fiber reinforced thermoplastic composites by investigating the mechanics of chip formation and the multiscale cut surface's quality induced by the orthogonal cutting process. Unidirectional flax fibers reinforced polypropylene (UDF/PP) composite has been tested by orthogonal cutting experiments. Mechanical tensile and shear tests have been conducted on UDF/PP specimens to relate the mechanical behavior to the cutting behavior. Results show that UDF/PP composites produce a continuous chip at all the considered cutting conditions. This is inherently related to the specific mechanical behavior of flax fibers inside the thermoplastic matrix under cutting solicitations. The cutting behavior induces a consequent surface damages in the form of debonding zones and uncut fiber extremities. Results demonstrate that the cutting depth has the most significant influence on the machinability after sorting the pertinent scales of the cut surface using the multiscale surface analysis approach.

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An exact permutation method for testing any effect in balanced and unbalanced fixed effect ANOVA

Cited by 48 publications

References 13 publications

A comparison of different synchronized permutation approaches to testing effects in two-level two-factor unbalanced ANOVA designs

A comparison of different synchronized permutation approaches to testing effects in two-level two-factor unbalanced ANOVA designs

Brain Training Game Boosts Executive Functions, Working Memory and Processing Speed in the Young Adults: A Randomized Controlled Trial

Mechanics of material removal when cutting natural fiber reinforced thermoplastic composites

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