Mean is the one of the most commonly used measures of central tendency. It’s a powerful tool for understanding…

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

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

Data is set of observation. This observation can be collected in various ways such as field notes, survey or…

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

1. “Fallen angels will all go back up, eventually.” A “fallen angel” is a stock that once performed well…