What is Defect Density ?

Defect Density is measured as the number of bugs or defects detected in an element or system divided by the size of that element or system. In normal measurement terms, it describes all line of code, or the quantity of classes in a program or function points in a projects. Defect density is a calculation of the all familiar defects or bugs divided by the volume of the software entity being calculated.

Here is a formula which is very helpful to calculated the density of defects:-

Defect Density= Number Of Known Defects / Software Size

The number of known or familiar defects is the estimate of all defects or bugs detected toward a specific software or application entity throughout a specific period of time.

We can categorize the total number of defects or bugs detected throughout distinct time intervals mentioned as below :-
1- Defects or bugs to date whereas the beginning of the software entity.
2- Defects or bugs found in a program or application throughout an investigation or inspection.
3- Defects or bugs to date whereas the distribution of a software or application deliver to the client.

Uses of Defect Density:-
1- Defect density is measured to comparison the relative number of bugs or defects in different software elements.This supports to determine the software element for supplementary testing.
2- One more use of defect density is to match sequential delivery of a product to trace the effect of defect or bug abbreviation and quality enhancements behaviors or activities.