Data Visualization, Box Plot, Screen 8

I did not understand the below concept . Kindly elaborate.

The third quartile (Q3) : Represented by the top of the box. Seventy-five percent of the values are smaller than the third quartile.
Also, the 1st quartile (Q1).

Hi @sharathnandalike. The concept of interquartile ranges is also discussed on this screen from the Statistics Fundamentals in R course. The screen following discusses how the interquartile range is used to determine outliers.

Let me know if you have any followup quesitons.