Abstract
Experimental estimators are presented relating the expected number of software errors (B) in a software development project tothe overall reported months of programmer effort for the project (E)the number of subprograms (n)the count of thousands of coded source statements (S)These estimators areB ≈ 7.6 E 0.667 S 0.333 andB ≈ n ((S/n)/.047) 1.667 These estimators are shown to be consistent with data obtained from the air force Rome air development center, the naval research laboratory, and Fujitsu corporation. It is suggested here that more data is needed to refine these estimators further.
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