NIST Decision Tree for Key Comparisons



Data Entry

Directions: Enter your data using the interactive table below. The table functions similarly to common spreadsheet software. For example, you can copy and paste data from a spreadsheet directly into the table below. To manually add/remove rows, right click on the table and select the desired option. Labs in rows with a the option checked will be taken into account for the KCRV computation. Labs in rows left unchecked will not be used in the KCRV computation, but their degrees of equivalence will be computed.


When you have finished entering the data into the table, click the 'Validate Data' button to confirm your selections. Then proceed to the 'Decision Tree' tab.










Alternatively, you may upload a .csv file following the same format as the above table. (Column names should read "Laboratory","MeasuredValues","StdUnc","DegreesOfFreedom".)





                


                


                















Unilateral Degrees of Equivalence Table