| Question:I need information about Metrics, which is used to find faults. it is   something related with measurement. I need to know how it is used in Quality   Assurance.
 
 Answer:
 You can measure the arrival and departure times of developers, if you have   them clock in, but that won't tell you much since not all work is done in the   office (and it doesn't mean that they're working when they're in the office).   This is, however, still a metric.
 
 The same holds for a true "quality metric". The most familiar one   is defects per thousand lines of (uncommented) code. But this metric assumes   that:
 1) you count the lines of code
 2) the complexity of the code isn't an issue
 3) the programmers aren't playing games (like using continuance characters
 so that what could have been written in one line isn't done in five lines)
 4) all defects are uncovered in the code in a single pass
 5) each defect discovered is all others
 6) defects are uncovered in a linear manner between revisions or builds
 
 The fact is that first you need to know what your goal is. Then you need to
 discover or create a metric that will help you achieve that goal. Then you
 need to implement it and be prepared to adjust it.
 
 You can't use measurements (metrics) to find faults, at least not in   software, so that's not a reasonable goal. You can use metrics to help   determine if most of the defects have been discovered already. You can use   them to tell you how much longer it will take to uncover a reasonable amount   of defects. For either of these metrics you will need to know how previous   projects of similar size and complexity (using similar languages, etc.) were   done in order to get a reasonable comparison.
 
 Posted by Walter   Gorlitz
          | Test     Case: File Open # | TestDescription
 | Test     Cases/ Samples | Pass/Fail
 | No. ofBugs
 | Bug#  | Comments  |       | N/A  | Setup     for [Product Name] | setup | -  | -  | -  |    |       | 1.1  | Test     that file types supported by the program can be opened | 1.1  | P/F  | #  | #  |    |       | 1.2  | Verify     all the different ways to open file (mouse, keyboard and accelerated keys) |  1.2  |  P/F  |  #  |  #  |   |       | 1.3  | Verify     files can be open from the local drives as well as network | 1.3  |  P/F  |   |   |   |  
 | 
 
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