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

The Challenger disaster occurred on January 28, 1986, during the launch of the Space Shuttle Challenger. The Space Shuttle…

In a dataset, an alternative plot apart from the histogram is a density plot. Similar to a histogram, a…

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

When analyzing distributions, we often discuss their modalities. The modalities is the number of peaks they exhibit. A distribution…

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