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

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

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

We can get the numerical summary through measures of central tendency, location, and variability for numerical data. But numbers…

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

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