Creating good graphics is a very important part of data visualization. Data visualization is not a science this is…

In a box plot, the “box” represents the interquartile range (IQR) of the data. Inside the box, you find…

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

So, let’s look at another example to understand tabulating the two categorical variables. In previous article we have described…

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

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