The t-test is as defined in the previous lecture. It has slope 1/σ. The Mann-Whitney test rejects if 1 nm ∑ i,j I(Xi ≤ Yj) is large. Note. The Mann-Whitney statistic has a relationship with the area under the ROC curve (AUC) for classification algorithms with a tunable parameter. The ROC plot has one axis for proportion of false positives and one axis for proportion of true positives; as we mov...

BACKGROUND Although non-normal data are widespread in biomedical research, parametric tests unnecessarily predominate in statistical analyses. METHODS We surveyed five biomedical journals and - for all studies which contain at least the unpaired t-test or the non-parametric Wilcoxon-Mann-Whitney test - investigated the relationship between the choice of a statistical test and other variables ...

We reviewed 87 patients who underwent revision reconstruction of the anterior cruciate ligament. The incidence of meniscal tears and degenerative change was assessed and related to the interval between failure of the primary graft and revision reconstruction. Patients were divided into two groups: early revision surgery within six months of graft failure, and delayed revision. Degenerative chan...

Cluster-based permutation tests are widely used in neuroscience studies for the analysis of high-dimensional electroencephalography (EEG) and event-related potential (ERP) data as it may address multiple comparison problem without reducing statistical power. However, classical cluster-based relies on parametric t-tests, whose assumptions not be verified case non-normality distribution alternati...

Penelitian ini bertujuan untuk mengukur prestasi hasil belajar dalam kegiatan pelatihan SAILS-UINSA di Fakultas syariah dan Hukum dengan menggunakan Mann-Whitney. Metode penelitian yang digunakan yaitu kuantitatif, pengumpulan data angket, dianalisis secara diskriptif Berdasarkan analisis terhadap telah dikumpulkan, diperoleh kesimpulan bahwa Syariah UINSA diskripsi memberikan kenaikan rata-rat...

For a doctor, being on call typically involves stress and fatigue associated with moments of anxiety and sleeplessness. Resident physicians (MIR) are on call more than 4 times per month and during those periods may have to work for 24 h at a stretch. Several studies have associated being on call with increased cardiovascular risk, and alteration in blood pressure (BP) is one of the causal mecha...

For a doctor, being on call typically involves stress and fatigue associated with moments of anxiety and sleeplessness. Resident physicians (MIR) are on call more than 4 times per month and during those periods may have to work for 24 h at a stretch. Several studies have associated being on call with increased cardiovascular risk, and alteration in blood pressure (BP) is one of the causal mecha...