Previous research has investigated the multivariate normality of stock returns using tests based on the marginal distribution of returns. Due to the contemporaneous correlation across asset returns, ...

The Wilcoxon Rank Sum Test is a non-parametric means of comparing data between two sets. It operates as a useful alternative ...

Normality testing is a fundamental component in statistical analysis, central to validating many inferential techniques that presume Gaussian behaviour of error terms ...

An important part of exploratory data analysis is to determine if the data at hand reasonably satisfy the assumptions underlying the statistical test to be performed. Parametric tests include ...

Will Kenton is an expert on the economy and investing laws and regulations. He previously held senior editorial roles at Investopedia and Kapitall Wire and holds a MA in Economics from The New School ...