Key Points A Box-Cox Power Transformation allows you to transform data to match a normal distribution. It is not a guarantee ...

Reason 1: Extreme Values Too many extreme values in a data set will result in a skewed distribution. The normality of data can be achieved by cleaning the data.

In medical research, is getting normal data really the norm? Andrew J. Vickers, PhD, discusses his theories of nonnormality in the statistical world.

Normal or bell curve distribution can be used in portfolio theory to help portfolio managers maximize return and minimize risk.

Normal distribution is a continuous probability distribution wherein values lie in a symmetrical fashion mostly situated around the mean.

The histogram, boxplot, and normal probability plot are three graphics that can be used when assessing the distribution of a set of data. Figure 2, left panel, shows a histogram of some typical ...