Sökning: "Permutation test"
Visar resultat 1 - 5 av 9 avhandlingar innehållade orden Permutation test.
1. Methods for interval-censored data and testing for stochastic dominance
Sammanfattning : This thesis includes four papers: the first three of them are concerned with methods for interval-censored data, while the forth paper is devoted to testing for stochastic dominance.In many studies, the variable of interest is observed to lie within an interval instead of being observed exactly, i.e. LÄS MER
2. Nonparametric tests for comparing two treatments by using ordinal data
Sammanfattning : This thesis concerns four nonparametric tests for comparing two treatments in a randomized controlled clinical trial when the main response variable generates discrete or continuous ordinal data and measurements are made at baseline and follow-up. In the Wilcoxon-Mann-Whitney test (WMW) the baseline values are not taken into account at all, but in the other three tests both baseline and follow-up values are used. LÄS MER
3. Computational Medical Image Analysis : With a Focus on Real-Time fMRI and Non-Parametric Statistics
Sammanfattning : Functional magnetic resonance imaging (fMRI) is a prime example of multi-disciplinary research. Without the beautiful physics of MRI, there wouldnot be any images to look at in the first place. To obtain images of goodquality, it is necessary to fully understand the concepts of the frequencydomain. LÄS MER
4. Aspects of multilinear algebra in statistical analysis of seasonal multivariate time series
Sammanfattning : Representations of concepts from multivariate statistics are studied using multilinear algebra. Applications are given to the analysis of seasonal multivariate time series. The first paper concerns a class of permutation matrices which are representations of permutation operators on tensor spaces. LÄS MER
5. Which Genes are Involved? - Statistical Planning and Analysis of Human Genetic Samples
Sammanfattning : This thesis consists of six papers related to the statistical planning and analysis of human genetic samples. The first four mainly concern statistical methodology, while the last two are applied papers in genetics and medicin. In paper A an alternative method of estimating the locus specific sibling relative risk .lambda. LÄS MER