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 29 for “"Sign Test"”.
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Unbiased Estimation and Admissibility and the Treatment of Ties in the Sign Test
Made available in DSpace on 2014-12-05T22:27:21Z (GMT). No. of bitstreams: 1 0018133.pdf: 2141802 bytes, checksum: f2a3bb72bebddc7e1643228fcfb68832 (MD5) Previous issue date: 1956
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A procedural comparison of combat tactics: a simulation approach
… the performance measures are analyzed using the sign test or the Wilcoxon signed ranked test. The applicability of simulation modeling, appropriateness of the performance measures, and the use of sign test to compare combat tactics with any degree of complexity is established in this study. An …
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Nonparametric multivariate multisample tests of the location problem and multivariate regression based on directions of data
Randles' one sample multivariate sign test based on interdirections is extended to two sample and multisample tests. A heuristic argument suggests that when samples are drawn from elliptically symmetric distributions all of these tests share the same asymptotic relative efficiency with respect to …
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On comparing different tests of the same hypothesis
… procedures for comparing standard and quick tests of a null hypothesis H<sub>o</sub>. This comparison is usually made by plotting the power curves of each test for a fixed Type I error. However, the power curves give only an indication of the individual performances of each test and not of …
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Multi-Country Event Study Methods
… in non-U.S. multi-country samples? Nonparametric tests, especially the rank and generalized sign, are better specified and more powerful than common parametric tests, especially in multi-day windows. The generalized sign test is the best statistic but must be applied to buy-and-hold abnormal …
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The small-sample power of some nonparametric tests
I. Small-Sample Power of the One-Sample Sign Test for Approximately Normal Distributions. The power function of the one-sided, one-sample sign test is studied for populations which deviate from exact normality, either by skewness, kurtosis, or both. The terms of the Edgeworth asymptotic expansion …
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Preliminary design of a social asymmetric virtual reality upper-limb exergame for individuals with dementia utilizing insights from caregivers
… of average daily activities. Additionally, a Sign test between the cooperative versions revealed a statistically significant difference in mean Behavioural Engagement scores favouring the version external to VR, p = 0.031. Although future studies with larger sample sizes are needed for an …
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The effects of character education on fourth grade students' attitudes toward in-school behavior
… setting. This study used scores from a pre-test and post-test which was designed with character development scenarios taken by fourth grade students in a rural elementary school after they participated in a character education unit.</p> <p>Eighteen (n = 18) participated in this …
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Understory vegetation patterns in oak savannas of the Missouri Ozarks
… in governing species composition. There was no significant difference between flora lists on cherty-deep to dolomite and cherty-shallow to dolomite substrates in sign test. Species associations were identified for savannas on each DCA substrate type.
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Did bowhead whales (Balaena mysticetus) from the Bering-Chukchi-Beaufort Seas undergo a genetic bottleneck? A test using nuclear microsatellite loci
… provide conflicting conclusions. The Wilcoxon test is significant for a heterozygote excess (p = 0.042) suggesting that a genetic bottleneck has occurred. This is not substantiated by the exact tests of each locus or the table-wide sign test. There is a possibility that a bottleneck has …
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COMPARISON OF EXTERNAL TIBIAL ROTATION IN AFFECTED AND UNAFFECTED KNEES AS MEASURED BY TWO CLINICAL METHODS
… determine if the goniometric and Modified Helfet Test (MHT) methods of assessing tibial rotation, could distinguish between knees affected or unaffected by pathology and/or surgery. METHODS: Twenty-eight subjects with knee pathology diagnosed by a physician and with self-reported activity …
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Performance measures and subjective evaluations for two color displays
… for each display. A four-way factorial design was used to collect task performance data and ambient illumination preferences; performance data were collected as errors per unit task quantity for each of the task types. Subjective evaluations consisted of 20 five-interval bipolar adjective …
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Individualized, Computerized Growth Prediction
… for females, with a high multiple correlation. A sign test at .05 level of confidence was used to determine if this regression formula method was significantly better than the mean incremental method presently used at Indiana University. The results showed that, in the majority of the cases, the …
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Cellular Phenotypes Associated with NRXN1 Mutations in Autism; an iPSC Study
… isoform expression. Patient line 211_NXM had a significantly higher levels of NRXN1 expression compared to patient line 092_NXF. 211_NXM neurons also displayed significantly higher firing rates as determined by MEA recordings. Conversely, patient line 092-NXF had NRXN1 expression and neurons …
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Placement of Severely Disabled Persons : Multi-Discipline Team Compared to Rehabilitation Counselors
… each subject in their placement activities. A sign test was used to distinguish the differences of the placement rates of the groups. A correlated t test was used to determine the difference in the cost-effectiveness of the two groups. Findings. In testing the research hypotheses at the .05 …
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A Comparison of Kinetic Family Drawings of Firstborn and Second-Born Siblings
… were analyzed quantitatively by the Wilcoxon Sign Test and Chi-Square, using a .05 level of significance. Sibling interaction and perspectives on the family were analyzed qualitatively.</p> <p><em>Results</em>. Second-born siblings drew significantly more barriers between self and mom and had …
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Effectiveness of a Fall Prevention Educational Program for Long-Term Care Nursing Staff
… aides. A Single-Group-Repeated Measures study design was used to evaluate knowledge and use of fall prevention strategies. The nursing staff members received face-to-face educational sessions on fall prevention using AHRQ guidelines on universal fall precautions. Pre-test, one month …
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Employee wellness programme in clothing/ textile manufacturing companies: What are the effects?
… the Statistica-8 software program. Although t-tests are the most commonly used statistical method for evaluating the differences in the means between two groups (e.g. control and experimental), it assumes that the variable is normally distributed. Thus, because the ordinal data were not …
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Examining the drivers and barriers to e-procurement and e-collaboration adoption in South African Construction- post Covid-19
… also determines the EC and EP adoption rates and tests whether there are statistically significant differences in the drivers and barriers of EP and EC before versus after the onset of Covid-19. A questionnaire was compiled using the top drivers and barriers found in the literature review. It was …
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An empirical comparison using both the term structure of interest rates and alternative models in pricing options on 90-day BAB futures
… research has been done in the area of actually testing the models. In this thesis we report the results of a set of tests of the models indicated below. This paper involves analysis of the pricing errors of the Black model ( 1976), Asay model (1982), Extended-Vasicek model (1990) and …
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