Variance represents the average of the squared deviations from the mean. Because we square the deviations, the variance is…

If you have a sample or population of data and you want to understand the different properties, the different…

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

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

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

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