ABSTRACT
____________________11 Quality control, testing methods and statistical evaluation of results ‘Quality control’ is perhaps the most misused term in the grc industry because quality is not usually con trolled as such but merely recorded. Post-production recording of quality should prevent defective units leaving the factory but, if this is the only method applied, the consequence is expensive wastage. A bet ter approach is to consider the subject as covering three definite areas: • Pre-production checking
