Essays about: "outlying observation"

Found 2 essays containing the words outlying observation.

1. 1. The Two-Sample t-test and the Influence of Outliers : - A simulation study on how the type I error rate is impacted by outliers of different magnitude.

   University essay from Uppsala universitet/Statistiska institutionen

   Author : Carl Widerberg; [2019]
   Keywords : Outlier; extreme value; outlying observation; ANOVA; Two-sample t-test; Student’s t-test; Welch’s t-test; type I error rate; robustness.;

   Abstract : This study investigates how outliers of different magnitude impact the robustness of the twosample t-test. A simulation study approach is used to analyze the behavior of type I error rates when outliers are added to generated data. Outliers may distort parameter estimates such as the mean and variance and cause misleading test results. READ MORE

3. 2. ANOVA - The Effect of Outliers

   University essay from Uppsala universitet/Statistiska institutionen

   Author : Markus Halldestam; [2016]
   Keywords : Analysis of variance; ANOVA; outlier; outlying observation; typ-1 error; robust;

   Abstract : This bachelor’s thesis focuses on the effect of outliers on the one-way analysis of variance and examines whether the estimate in ANOVA is robust and whether the actual test itself is robust from influence of extreme outliers. The robustness of the estimates is examined using the breakdown point while the robustness of the test is examined by simulating the hypothesis test under some extreme situations. READ MORE