Search results for "F-test"

showing 3 items of 3 documents

Impact of the erase algorithms on flash memory lifetime

2017

This paper presents a comparative study on the impact of the erase algorithm on flash memory lifetime, to demonstrate how the reduction of overall stress, suffered by memories, will increase their lifetime, thanks to a smart management of erase operations. To this purpose a fixed erase voltage, equal to the maximum value and the maximum time-window, was taken as the reference test; while an algorithm with adaptive voltage levels and the same overall time-window was designed and implemented in order to compare their experimental results. This study was carried out by using an innovative Automated Test Equipment, named Portable-ATE, tailored for Memory Test Chip and designed for performance e…

010302 applied physicsAdaptive algorithmComputer science02 engineering and technologyChip01 natural sciencesFlash memory020202 computer hardware & architectureReduction (complexity)Automatic test equipmentMemory managementBuilt-in self-test0103 physical sciences0202 electrical engineering electronic engineering information engineeringAlgorithm designAlgorithm2017 13th Conference on Ph.D. Research in Microelectronics and Electronics (PRIME)
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Testing for homogeneity in meta-analysis I. The one-parameter case: standardized mean difference.

2010

Meta-analysis seeks to combine the results of several experiments in order to improve the accuracy of decisions. It is common to use a test for homogeneity to determine if the results of the several experiments are sufficiently similar to warrant their combination into an overall result. Cochran's Q statistic is frequently used for this homogeneity test. It is often assumed that Q follows a chi-square distribution under the null hypothesis of homogeneity, but it has long been known that this asymptotic distribution for Q is not accurate for moderate sample sizes. Here, we present an expansion for the mean of Q under the null hypothesis that is valid when the effect and the weight for each s…

Statistics and ProbabilityBiometryModels StatisticalGeneral Immunology and MicrobiologyApplied MathematicsHomogeneity (statistics)Pearson's chi-squared testAsymptotic distributionGeneral MedicineGeneral Biochemistry Genetics and Molecular Biologysymbols.namesakeF-testMeta-Analysis as TopicData Interpretation StatisticalStatisticsTest statisticNull distributionsymbolsChi-square testZ-testComputer SimulationGeneral Agricultural and Biological SciencesEpidemiologic MethodsAlgorithmsMathematicsBiometrics
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Empirical Likelihood-Based ANOVA for Trimmed Means

2016

In this paper, we introduce an alternative to Yuen’s test for the comparison of several population trimmed means. This nonparametric ANOVA type test is based on the empirical likelihood (EL) approach and extends the results for one population trimmed mean from Qin and Tsao (2002). The results of our simulation study indicate that for skewed distributions, with and without variance heterogeneity, Yuen’s test performs better than the new EL ANOVA test for trimmed means with respect to control over the probability of a type I error. This finding is in contrast with our simulation results for the comparison of means, where the EL ANOVA test for means performs better than Welch’s heteroscedastic…

HeteroscedasticityHealth Toxicology and MutagenesisPopulationRobust statisticslcsh:Medicineempirical likelihood01 natural sciencesArticletrimmed means010104 statistics & probabilityF-testStatisticshypothesis testing0101 mathematicseducationMathematicseducation.field_of_studyANOVA010102 general mathematicslcsh:RANOVA; empirical likelihood; trimmed means; robust statistics; hypothesis testingPublic Health Environmental and Occupational HealthNonparametric statisticsTruncated meanBrown–Forsythe testEmpirical likelihoodrobust statisticsInternational Journal of Environmental Research and Public Health; Volume 13; Issue 10; Pages: 953
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