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

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

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

Stock Traders look for various signal like GDP, inflation rate, interest rate to predict the future economic condition. One…

There is an important distinction between a sample of data and population of data. So, let’s take a research…

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