Now, let's tackle the task of finding the indicated z-score shown in a graph. This usually involves being given an area under the standard normal curve and needing to find the corresponding z-score.

Anyone familiar with basic statistics is familiar with the concept of a bell curve. A bell curve is a visual representation of normal data distribution, in which the median represents the highest ...

What is non-normal data? Normally distributed data is a commonly misunderstood concept in Six Sigma. Some people believe all data collected and used for analysis must be distributed normally. But ...