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

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

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

Describing Numerical Data In the previous articles we described two kinds of variable numerical and categorical, also known as…

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

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