He discovered about the data, such as the center and the spread. Exploratory data analysis was developed by John Tukey and presented in his book Exploratory Data Analysis
(Addison-Wesley, 1977)
The Five-Number Summary and Boxplots
Aboxplot can be used to graphically represent the data set. These plots involve the
pocific values
1. Theldest value of the data set minimum)
3. The median
5. The highest value of the data set ce, maximum)
These values are called a five-number summary of the data set​