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wht is Defect removable efficiency

Answer Posted / ns reddy

DRE=0-1(Range).
DRE=A/A+B
DRE = Defect Removal Efficiency.
A = Defects found by the Testing Team. . 
B = Defects raised by the Customer. 
DRE=80/80+20=80/100=4/5=0.8 (Good Software).
GOOD SOFTWARE :0.7-1
POOR SOFTWARE  :Below 0.7

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