In the previous article we discussed how to visualize two categorical variables through dodged, staked bar graphs. Another way…

There are two main kinds of studies, observational studies and, experimental studies. The statistical process can be viewed in…

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

To better illustrate the concepts of mean, median and mode, let’s dive into an example survey about what makes…

Data is set of observation. This observation can be collected in various ways such as field notes, survey or…

To understand how spread out a set of data points can be, we need to measure the variation. The…