One of the way to measure the variability is to calculate the difference of each observation from the mean.…

A straightforward solution to deal with unit of variance which is in squared units is to simply calculate the…

Previous article discussed the basic contingency table of proportions and percentages. People often want to ask more about relationships…

We’ve discussed the mean previously about mean or average as a measure of central tendency, let’s explore two other…

Histograms are incredibly useful when you have a large dataset and want to visualize the distribution of a numerical…

In previous article we discussed about variance and standard deviation, assuming we had a population of data, even though…