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

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

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

A straightforward solution to deal with unit of variance which is in squared units is to simply calculate the…

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

In the world of statistics and data analysis, understanding the relationship between two variables is crucial. One of the…