Key Points Non-parametric tests are used when standard assumptions are not available. These tests don’t rely on distributions, often using real-world data instead. These tests are simple to implement, ...

A new publication by two University of Cincinnati researchers contends that adjusting how researchers approach their ...

Course TopicsPower analyses and sample size calculations are important parts of many research projects. Often, before data are even collected, it is necessary to calculate and justify the required ...

Numerous examples from clinical research are worked through both manually and using SAS. Methods presented include t-tests, analysis of variance, repeated measures ANOVA, linear regression, analysis ...

Low-powered studies lead to overestimates of effect size and low reproducibility of results. In this Analysis article, Munafò and colleagues show that the average statistical power of studies in ...

Knowledge of statistical and financial analysis methods and procedures is so important that Hal Varian, chief economist at Google, called statistician the "sexy job" of the 21st century. Function ...

Example of Quantitative Analysis To make the example a little more realistic, consider a portfolio that divides its assets between cash and an S&P 500 index fund .

Housed in the Department of Applied Mathematics, the Laboratory for Interdisciplinary Statistical Analysis (LISA) trains students to become effective interdisciplinary collaborators who can apply ...