Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 24 for “"type II error"”.
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An Investigation of Unidimensional Testing Procedures under Latent Trait Theory using Principal Component Analysis
… able to address three purposes: determining the Type I error rates associated with various criterion values, for assessing unidimensionality; determining the Type II error rates and statistical power associated with various rules of thumb when assessing dimensionality; and, finally, determining …
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A re-examination of two major bankruptcy prediction models
… change in U.S. bankruptcy law in the 1970s; and (ii) the increased use of financial leverage in the 1980s. The first portion of this thesis reviews the bankruptcy prediction literature and discusses the change in U.S. bankruptcy law and capital structure. The evidence presented in this study …
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Robustness of Triple Sampling Inference Procedures to Underlying Distributions
… mean is investigated where a squared<br/>error loss function with linear sampling cost is assumed to control the risk of estimating the unknown<br/>population mean by the corresponding sample measure. We find that the behaviour of the estimators<br/>and of the sample size depends …
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Reliability diagnostic strategies for series systems under imperfect testing
… in series systems under imperfect testing. Type I and type II error probabilities are included and single-pass sample paths are required. The model accounts for the expected costs of testing components, false positive termination, and no-defect-found outcomes. Based on the model, a heuristic …
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A comparison of alternative methods to the shewhart-type control chart
… criterion for comparison is the probability of a Type II sampling error. Several out-of-control cases are examined. In the case of Repko, an equation is defined to compute the Type II error probability. The results indicate that the Reynolds and Ghosh statistic is powerful for cases when the …
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Robustness And Power Comparison Of The Mood-Westenberg And Siegel-Tukey Tests
… test (1960) would remain robust with respect to Type I and Type II error properties (and associated power levels) for detecting variance changes when their assumptions of equal means was slightly violated (i.e., the Behrens-Fisher problem). With the use of Monte Carlo Simulations, the author …
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The effect of beta-carotene vitamin E, and vitamin C supplementation upon work capacity during a protocol of arm curl exercise using the Biodex dyanamometer
… to make a determination without a high risk of Type II error. Significant subject dropout and work measure variability contributed to the low power.
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Approximate Vs. Monte Carlo Critical Values For The Winsorized T-Test
… were compared with respect to robustness to types I and II errors through Monte Carlo simulations for one and 10% Winsorized values per end.</p> <p>20% Winsorized results were generally non-robust for approximate critical values and mixed for Monte Carlo-derived critical values. With one …
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The Relationship Of Principal Gender And Teacher Perceptions Of School Climate On Suspension And Expulsion Rates Of High School Students
… and number of expulsions, indicate a possible Type II error. Given this mix of statistical results and possible error, the research concludes with a recommendation for further research.
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International Students in Supervision: Multicultural Discussions as a Moderator between Supervision Related Constructs: Acculturation, Counselor Self-Efficacy, Supervisory Working Alliance, and Role Ambiguity
… well as probability of false negative results (Type II Error).
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Inferential Methods for High-Throughput Methylation Data
… ultimately shown through simulations comparing Type I and Type II error rates that the (unfiltered) Two Sample t-test and the Beta distribution test performed comparatively well.
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Simulating Statistical Power Curves with the Bootstrap and Robust Estimation
… tests are not robust with respect to power and type II error. However, relatively little attention has been paid in the psychological literature to the effect that non-normality and outliers have on the power of a given statistical test (Wilcox, 1998). Robust measures of location exist that …
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Psychological biases affect hedonic ratings
… more explained variances, resulting in decreased Type-II error in the model. Logistic regression analysis was proven to be an alternative methodology to quantify sensory contrast effects. For sensory testing, a multidimensional attribute tended to be more affected by the contrast effects than a …
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A Novel Penalized Log-likelihood Function for Class Imbalance Problem
… and additional performance measurements (i.e. Type I error, Type II error, accuracy) under the chosen probability cutoff. The results demonstrate that the discrimination ability of the models is improved by using the proposed log-likelihood function as the learning objective while reducing or …
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The Production and Evaluation of Evidence in Experimental Economics
… inference only to consider significance levels (type-I error) without taking into account type-II error. Making use of the marginal effects estimated in the meta-analysis from the first essay, we determine the statistical power of these studies to be notably low. We also discuss the consequences …
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Decentralized detection in resource-limited sensor network architectures
… as a tree of bounded height. We show that the error probability decays exponentially fast with the number of nodes under both a Neyman-Pearson criterion and a Bayesian criterion, and provide bounds for the optimal error exponent. Furthermore, we show that under the Neyman-Pearson criterion, the …
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Functional genomic analysis of PPAR-gamma in human colorectal cancer cells
… also significantly repressed the invasive phenotype, but not motility, of these tumor cells.\r\n\r\nTowards elucidating the activated PPAR-gamma controlled genomic program responsible for these observed phenotypes, functional genomic analysis was performed using a two-class longitudinal …
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Knee function, movement pattern and knee osteoarthritis in males 14-16 years after an anterior cruciate ligament injury
… healthy references were investigated. In Study II, the kinetics and kinematics of three functional tests: gait, step activity and cross-over hop, of the 12 ACL-injured subjects (a geographically determined subgroup from Study 1) and the 12 matched reference were compared. The self-reported knee …
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The Effect of Melatonin Upon Post-Acute Withdrawal Among Males in a Residential Treatment Program (M-Paws): A Randomized, Double-Blind, Placebo Controlled Trial
… histories, there exists a possibility of a Type II error that must be considered and not overlooked.</p>
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Statistical Hypothesis Testing Under Model Uncertainty
… We analyze the tradeoff between the pairwise error probability exponents when the actual distributions generating the observation are different from the distributions used in the likelihood ratio test, sequential probability ratio test, and Hoeffding's generalized likelihood ratio test in the …
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