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 125 for “"F-test"”.
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An Investigation of Sensitivity of an F Test in Locating Change Points in Linear Regression
… thesis, we investigate the sensitivity of the F-test for detecting change points in linear regression, using a two-phase linear regression model. it offers an effective method to detect "undocumented" change points using a form of an F-test. Using simulated data, we explore its sensitivity and …
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Robust inferential procedures applied to regression
… inference framework. This results in an F-test based on the robust weights used in arriving at the M or Bounded-Influence estimates. These estimates are known to be robust to outliers and highly influential points, respectively. The first part of this evaluation involves a Monte Carlo power …
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The robustness to non-normality of significance levels of the t and F tests
A statistical test is called"robust" if it is insensitive to departures from the underlying assumptions, this term was introduced by Box (4). Theoretical study made by Gayen (13), (14) and (15) showed that"Student's" t-test and the closely related F-test of analysis of variance are insensitive to …
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Inferences on high-dimensional data
… show that the null distribution of the PLS ""f-test"" statistic, which is obtained from one factor PLS regression, depends heavily on the design. A simulation method is suggested to compute the appropriate significant level of the ""f-test"". Some of the statistical properties of the composite …
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An investigation of the challenges of internationalization on export performance of manufacturing SMEs: a survey of Lusaka province.
… Analysis with the help of SSPS version 23.0. F – test (1,77) = 67.532 was significant at 0.05 level of significance. Therefore, the null hypothesis was rejected and it was concluded that exogenous challenges negatively affect the export performance of manufacturing SMEs. the F-test (1,77) = 91.829 …
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An investigation of the challenges of internationalization on export performance of manufacturing SMEs: a survey of Lusaka province.
… Analysis with the help of SSPS version 23.0. F – test (1,77) = 67.532 was significant at 0.05 level of significance. Therefore, the null hypothesis was rejected and it was concluded that exogenous challenges negatively affect the export performance of manufacturing SMEs. the F-test (1,77) = 91.829 …
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Higher-order statistic-based detection of non-Gaussian signals
… HOS detection techniques with new tests that we propose. We formulate a new F-test statistic and derive refined conditional distributions for the test proposed by Hinich. We calculate the optimal smoothing bandwidth for the HOS estimate components of our F-test and his test, …
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Selecting the Best Linear Mixed Model Using Predictive Approaches
… performance of R-squared, PRESS, CCC, Pseudo F-test and information criterion for goodness-of-fit within the linear mixed model framework. Marginal and conditional approaches for these predictive statistics were studied under different variance-covariance structures. For compound symmetry …
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Power comparisons of four post-MANOVA tests under variance-covariance heterogeneity and non-normality in the two group case
… with a multivariate analog of the two group t-test, known as Hotelling's T². A Monte Carlo simulation was conducted to investigate the relative power of four post-MANOVA tests under violations of multivariate homoscedasticity and normality. The four methods for analyzing multivariate group …
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Computationally Intensive Methods for Spectrum Estimation
… spectrum estimation method: (1) two hypothesis testing procedures for evaluating the choice of time-bandwidth, NW, and number of tapers, K, parameters for the multitaper method, (2) a bootstrapping procedure for improving the signal detection rates for the F-test for line components, and (3) …
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A Discriminative Study of Girls’ Physical Education in High Schools of the Big Eight Athletic Conference
… in schools of the Big Eight Athletic Conference. Test results and statistical information compiled from the LaPorte Score Card, Elder P (M) F Test, McCloy GMA Test, Stradtman Test of Physical Fitness Knowledge, and the Kneer Attitude and Diagnostic Inventory reflected the status of physical …
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The Use of Ceftiofur Sodium in the Extension and Cooled Storage of Equine Semen: Its Effects on Motion Characteristics, pH, Osmolality, and Bacterial Growth
… increased values in comparison to controls (F test, P<0.05; post-test comparison, P<0.0071). There was also a significant effect of extender on STR (F test, P<0.05) with higher concentrations of ceftiofur sodium tending to decrease values in comparison to controls (P<0.028). The changes in …
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The extension of the multiple comparisons test to lattice designs
… product. In this type of investigation, an F test of the mean square for treatments is often used to test the hypothesis that all treatment means are homogeneous. Given that this hypothesis can be rejected, the experimenter would like to make decisions about the significances of individual …
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Hypothesis testing procedures for non-nested regression models
… as to the specific form of this function. To test the validity of a given functional form with sensitivity toward the feasible alternatives, a procedure is needed for comparing non-nested families of hypotheses. Two hypothesized models are said to be non-nested when one model is neither a …
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The image of traffic policing in Transkei
… To achieve reliable results, Chi-square, F-test and t-test have been implemented to test for significant differences. The attitudes of the respondents have been measured with regard to two traffic institutions in Transkei, namely: Municipal and Provincial traffic institutions. Traffic order …
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Job satisfaction of employed registered cytotechnologists in Texas
… their rewards and recognition. The univariate F test was non-significant for Hypothesis 2, except for item 5. For item 5, supervisors expressed a higher level of satisfaction with the opportunitis for problem solving. The mean for item 5 for bench cytotechnologists was 3.40 and for supervisors 4 …
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Hospital Cost Functions and Quality
… with previous research. Lastly, based on an F-test, this study is able to accept the translog as the appropriate functional form.
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Mineral content of vegetables grown with organic and mineral fertilizers
… variation between treatments rendered the F test meaningless for many minerals. Where differences were found, they were in favor of chemically fertilized vegetables as often as in favor of those fertilized organically. It was concluded that methods of fertilization will not differently affect …
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Pengaruh kompensasi langsung dan tidak langsung terhadap kinerja karyawan di PT Bank Mandiri Malang
… The analysis used include validity, reliability testing, multiple regression analysis, coefficient of determination, F test and t test Data that has been processed using SPSS, produces the following regression equation: y = 393,007 - 1,063 x1 - 0,832 x2 The above equation regression model showed …
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An Assessment of the Impact of Working Capital Management on Cash Holdings: Case Study of Listed Companies in Tanzania
… was empirically analyzed and statistics were tested by using t-test, ANOVA and F-test. The study revealed that there is positive relationship between firms’ growth opportunity and firms’ cash holding. It also revealed that working capital expenditure to a degree is responsible for reducing …
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