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

Histograms are incredibly useful when you have a large dataset and want to visualize the distribution of a numerical…

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

We can get the numerical summary through measures of central tendency, location, and variability for numerical data. But numbers…

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…