A METHOD OF SAMPLING INSPECTION 



623 



600 

 500 

 400 



300 

 200 



0.1 0.2 0.3 0.4 0.5 0.6 



RATIO OF PROCESS AVERAGE TO TOLERANCE 

 rp/pt= (pro CESS AVERAGE FRACTION DE FECTIVE)/(T0LERANCE FRACTION DEFECTIVE)] 



Fig. 2 — Chart for finding acceptance number. 



