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

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

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

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

Unlike the mean and median, which represent average and middle values respectively, the mode identifies the most frequently occurring…

Mean is the one of the most commonly used measures of central tendency. It’s a powerful tool for understanding…