The main objective of this paper to purpose a evaluating methods of process capability measures for exponential distributed quality characteristics. For correctly evaluating process capability , the first thing , exponential data is applied the Lilliefors test statistic to the null hypothesis of nornality. The next , exponential parameters is estimated in terms of MLE , ME , MME and then evaluated , respectively , process capability index based on exponential curved (Cpe). We consider simultaneously process capability messures based on Pearson system, Johnson system and Burr system.

Abstract 
Ⅰ. Introduction 
Ⅱ. The Lilliefors Test for the Exponential Distribution and parameter Estimatian 
Ⅲ. Process Capability Measures 
Ⅳ. Illustrative Example 
Ⅴ. Summary and Conclusions 
References

• Kim Hong Jun
• Kim Jin Soo