*This is the fifth of a five part series.*

*Quartiles for Box Plots*

*This topic is covered in the companion page Quartiles for Box Plots.*

*Hinge Techniques for Determining Quartiles*

*This topic is covered in the companion page Hinges.*

*Interpolation Methods of Determining Quartiles*

*This topic is covered in the companion page Quartiles.*

*Comparison of Values from All Hinge and Quartile Methods*

*This topic is covered in the companion page Comparison.*

## Quartiles in the Peltier Tech Chart Utility

The Peltier Tech Chart Utility provides a number of quartile methods, including Tukey’s Inclusive Hinge method, the Moore and McCabe Exclusive Hinge method, the CDF hinge technique used by default in SAS, the (N+1) Basis Interpolation approach used by Minitab and several other packages, the (N) Basis technique, and the (N-1) calculation used in Excel. The CDF calculation is selected by default, but this option can be changed in the simple listbox, inserted in the worksheet next to the box plot.