Parametric Tests Based on distributions Parameters are used (mean and standard deviations) T-test ANOVA etc. Aim of Non Parametric Tests Nonparametric, or distribution free tests are so-called because the assumptions underlying their use are “fewer and weaker than those associated with parametric tests” (Siegel & Castellan, 1988, p. 34). To put it another way, nonparametric tests require few if any assumptions about the shapes of the underlying population distributions. For this reason, they are often used in place ...
Why Statistical Significance Test • Suppose we have developed an EC algorithm A • We want to compare with another EC algorithm B • Both algorithms are stochastic • How can we be sure that A is better than B? • Assume we run A and B once, and get the results x and y, respectively. • If x < y (minimisation), is it because A is better than B, or just because of randomness? 2 Why Statistical Significance ...
Statistics is used to: • Describe data – descriptive statistics • Compare study groups • Search for any correlation between variables • Search for a regression between variables in order to extrapolate the dependent variable if independent variable(s) is(are) known • Analyze health outcomes 2 Overview of Presentation Which test to use? Parametric assumptions Non-parametric tests ANOVA (Analysis of variance) Correlation Dependent vs independent variables • The dependent variable represents • the output or • the effect, or • is ...
Meet the Instructors CYNTHIA GARVAN, MA, PHD TERRIE VASILOPOULOS, PHD Research Assistant Professor in Anesthesiology Research Professor in Anesthesiology and Orthopaedics and Rehabilitation Course Objectives Review fundamentals of study design and research methodology Understand how to choose best statistical test for your research question Practice basic statistical analysis use JMP Pro Software Course Topics Asking a Good Research Question Life Cycle of Research and the Scientific Method Study Design Data types and Database Construction Descriptive Statistics Data Visualization Population and ...
Meet the Instructors CYNTHIA GARVAN, MA, PHD TERRIE VASILOPOULOS, PHD Research Assistant Professor in Anesthesiology Research Professor in Anesthesiology and Orthopaedics and Rehabilitation Course Objectives Review fundamentals of study design and research methodology Understand how to choose best statistical test for your research question Practice basic statistical analysis use JMP Pro Software Course Topics Asking a Good Research Question Life Cycle of Research and the Scientific Method Study Design Data types and Database Construction Descriptive Statistics Data Visualization Population and ...
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