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

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

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

Imagine you’re a teacher assessing student performance in a math exam where scores range from 0 to 100. You’ve…

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

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