One of the way to measure the variability is to calculate the difference of each observation from the mean.…

The basic principle of how stock prices move is based on market demand and supply. When there are more…

Bar Graph-two categorical variable In the previous article, we have discussed tabulating and graphing one categorical variable through table…

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

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

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