# Author Archives: Andrew Lyon

## Chi-Square Goodness-of-Fit Test

Chi-Square Goodness-of-Fit (also referred to a Pearson’s Chi-Square Test) is a statistical method for determining how an actual or observed distribution of categorical variables relates to a theoretical distribution of those same variables. The Chi-Square Test is a non-parametric test meaning that its graph is not expected to approximate a normal distribution curve. An example […]

## Median

The Median is the middle of a ordered distribution of a sample, range, population, or simply list of numbers or values. When this distribution has an odd number of terms, the median is the middle most value. If the number set is even then the median is the mean of the two middle values. In contrast to the mean, […]