Fiber bundle tensile test have been used primarily as a replacement for the more tedious measurement of single fiber tensile tests. The reasons for such tests is to compare fiber bundle tenacity with yarn tenacity as a means of predicting yarn tensile tenacity. Today, the HVI tensile tester has replaced the Pressley and Stelometer testers primarily because of speed of operation. The purpose, however, is still the same. An important unsolved problem has been the difference between the amount of association found when zero or 1/8 inch gauge length bundle tenacity is related to yarn tenacity. Generally, the correlation coefficient for zero gauge for Pressley clamps used int he Stelometer yarn and data is presented that eliminates statistically significant differences between zero and 1/8 inch gauge bundle tenacity correlation coefficients when compared with yarn tenacity. This method of analysis may be helpful in understanding how to evaluate HVI data in a new way.