What are the 5 things needed to make a box plot?

The five things you need are low extreme, high extreme, median, interquartile 1, and interquartile 3

Box-and-whisker plots and the five key values used in constructing a box-and-whisker plot. The key values are called a five-number summary, which consists of the minimum, first quartile, median, third quartile, and maximum.