Defining Non-normal Data Normally distributed data is needed to use several statistical tools, such as individual control charts, Cp/Cpk analysis, t-tests, and the analysis of variance (ANOVA). If a ...

The Central Limit Theorem is a statistical concept applied to large data distributions. It says that as you randomly sample data from a distribution, the means and standard deviations of the samples ...

The normal distribution is a concept in statistics that assumes all values are distributed in the same pattern. It requires symmetry and consistent proportions in the distribution of values. Normal ...

A bell curve is a graph used to visualize the distribution of a set of chosen values across a specified group that tend to have central, normal values that peak, with low and high extremes tapering ...

(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) D. Brian Blank, Mississippi State University and Gary F. Templeton, West Virginia ...

When business researchers analyze data, they often rely on assumptions to help make sense of what they find. But like anyone else, they can run into a whole lot of trouble if those assumptions turn ...