Box Graph Explained. Nov 15 2011 So this box-and-whiskers plot tells us that half of the ages of the trees are less than 21 and half are older than 21. Minimum maximum median upper and lower quartiles.
The bottom line of the box represents the median of the bottom half or 1st quartile 4. They also show how far the extreme values are from most of the data. Nov 11 2019 Box plot gives an idea about the spreaddistribution of the dataset with the help of a five-number statistical summary which consists of Minimum First Quarter MedianSecond Quarter Third Quarter Maximum.
Although boxplots may seem primitive in comparison to a histogram or density plot they have the advantage of taking up less space which is useful when comparing distributions between many groups or datasets.
Tukey used to show the distribution of a dataset at a glance. A box plot includes five values. Scale and label an axis that fits the five-number summary. A box and whisker chart shows distribution of data into quartiles highlighting the mean and outliers.
