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

Stem and leaf plot is used to plot for a numerical variable. It’s essentially a way to list our…

Imagine you’re a teacher assessing student performance in a math exam where scores range from 0 to 100. You’ve…

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…

Introduction Let’s take a hypothetical example and consider a company as property. The value of a property can be…