Box And Whisker Plot Quartiles Explained. Dec 09 2020 Quartiles Boxplots Outliers The first and third quartiles are at the ends of the box the median is indicated with a vertical line in the interior of the box and the maximum and minimum are at the ends of the whiskers. Quartile 1 Q1 442 4.
The interquartile range abbreviated IQR is just the width of the box in the box-and-whisker plotThat is IQR Q 3 Q 1The IQR can be used as a measure of how spread-out the values are. We can represent the list of nine numbers from Example 11 in such a Box Plot. In this case all the quartiles are between numbers.
Q 1 43 432 43.
A vertical line goes through the box at the median. This plot is also called a box-and-whisker plot or a Tukey box plot. Whisker chart displays the spread and skewness in a batch of data through its five-number summary. Next construct two vertical lines through the upper and lower quartiles and then constructing a rectangular box that encloses the median value point.
