Q. What is Box-and-Whisker Plot?

Ans.

Line graphs or stem-and-leaf plots become difficult to manage when there is a large amount of data. Box-and-whisker plots help summarize large amounts of data into an easy-to-read diagram.

Related to the median, which separates the data into half, quartiles divide a data set into quarters. Q2 is the median of the data set, Q1 is the median of the lower half of the data and Q3 is the median of the upper half. These five measures are called the five-point summary of a data set.