To divide the data into quarters, we then find the medians of these two halves. The median divides the data into two halves. To create a box-and-whisker plot, we start by ordering our data (that is, putting the values) in numerical order, if they aren't ordered already.
![box and whisker plot lower quartile box and whisker plot lower quartile](https://cdn.kastatic.org/ka-youtube-converted/b2C9I8HuCe4.mp4/b2C9I8HuCe4.png)
The five-number summary is the minimum, first quartile, median, third quartile, and maximum. Mention the advantages of Box Plot The advantages of the box and whisker plot is that: We can easily identify the data location and data spread.
![box and whisker plot lower quartile box and whisker plot lower quartile](https://contexturesblog.com/wp-content/uploads/2008/12/boxandwhiskerchart01.png)
![box and whisker plot lower quartile box and whisker plot lower quartile](https://images.squarespace-cdn.com/content/v1/54905286e4b050812345644c/1569799025236-7RD3OKX4OL179SZFS0X8/Snip20190929_14.png)
Secondly, what do the quartiles mean in a box and whisker plot? A box and whisker plot-also called a box plot-displays the five-number summary of a set of data. Box and whisker plot is one type of graphical representation which shows the five-number summary for the given set of data, such as minimum value, lower quartile, median, upper quartile, maximum value. If you have an odd amount of numbers, don't include the middle number. Then, divide your data set in half and find the median of both the lower and upper half. To find the IQR, start by arranging the numbers in your data set from lowest to highest. In other words, from the minimum score to the lower quartile is We can add. The IQR tells how spread out the "middle" values are it can also be used to tell when some of the other values are "too far" from the central value.Īlso know, how do you find the interquartile range? Features of a box-and-whisker plot Each quartile represents of the data set. The " interquartile range", abbreviated " IQR", is just the width of the box in the box-and-whisker plot.