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

To understand how spread out a set of data points can be, we need to measure the variation. The…

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

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

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

We have covered major measures of center and location—mean, median, and mode—we now turn to other important measures: percentiles…