To describe a set of data in the analysis of six sigma is a Box Plot. Box Plot or Box and Whisker Plot graphic picture of the 5 statistical description, namely the smallest value, first quartile (Q1), Median, Third quartile, and the greatest value.

Graphic box plot can depict almost complete cypress pollen data sets. Because the information contained in the image graph is complete, and box plots are widely used primarily to compare the two sets of data or more.