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

In a box plot, the “box” represents the interquartile range (IQR) of the data. Inside the box, you find…

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

In data analysis, identifying outliers with the box plot  rule helps pinpoint data points that significantly deviate from the…

Stem and leaf plot is used to plot for a numerical variable. It’s essentially a way to list our…

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