Statistics – Probability Density Function and Z Table

It turns out that normally distributed values are quite important in statistics. Not only because the pattern is remarkably common,┬áthe central limit theorem enables statisticians to infer conclusions about how a given treatment will affect a given population. To make such inferences, we need to learn about the Probability Density Function and a useful shortcut: […]

Statistics – Standard Deviation

Most people are familiar with the concepts of the mean, median, and mode. They are measures of the central tendency of a value that has measured in a given population. They tell us, in different ways, about the value of an attribute at the heart of the population, rather than at the positive or negative […]