what is defect density software testing?
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Defect Density\n\nOne of the easiest ways to judge whether a program is ready to release is to measure its defect density—the number of defects per line of code. Suppose that the first version of your product, GigaTron 1.0, consisted of 100,000 lines of code, that you detected 650 defects prior to the software’s release, and that 50 more defects were reported after the software was released. The software therefore had a lifetime defect count of 700 defects, and a defect density of 7 defects per thousand lines of code (KLOC). \n\nSuppose that GigaTron 2.0 consisted of 50,000 additional lines of code, that you detected 400 defects prior to release, and another 75 after release. The total defect density of that release would be 475 total defects divided by 50,000 new lines of code, or 9.5 defects per KLOC. \n\nNow suppose that you’re trying to decide whether GigaTron 3.0 is reliable enough to ship. It consists of 100,000 new lines of code, and you’ve detected 600 defects so far, or 6 defects per KLOC. Unless you have a good reason to think that your development process has improved with this project, your experience should lead you to expect between 7 and 10 defects per KLOC. The number of defects you should attempt to find will vary depending on the level of quality you’re aiming for. If you want to remove 95 percent of all defects before shipping, you would need to detect somewhere between 650 and 950 pre-release defects. This technique suggests that the product is not quite ready to ship. \n\nThe more historical project data you have, the more confident you can be in your pre-release defect density targets. If you have data from only two projects and the range is as broad as 7 to 10 defects per KLOC, that leaves a lot of wiggle room for an expert judgment about whether the third project will be more like the first or second. But if you’ve tracked defect data for 10 projects and found that their average lifetime defect rate is 7.4 defects per KLOC with a standard deviation of 0.4 defects, you have a great deal of guidance indeed.
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Testing products helps the developer to identify flaws in the mechanics of the product, as well as complications with the product that make it hard for the consumer to use.  Product testing can also help the producer to identify and resolve safety issues with the product.
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Basically, its a test to see if a program or hardware setup crashes, usually over an extended period of time.
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rebuilt and tested for errors
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For each object some test cases can be put for both positive and negative testing under the white and block box based methodologies.... and all wud be based upon the functionality thats intended of the object... (since thats not specified... it not possible to highlight more upon what they can be)... for various phases... integration,development... based on the V model.
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Have you any experience in testing methodology?  White-box or Black-box reporting?  Are there any testing tools you're familiar with?\n\nIt's not just playing games and reporting bugs.  You might want to do some research and find out what the job requires, get some experience, then send your resume to every company that makes a game that interests you.  Chances are they have enough on-site testers that they need, but you can always hope to get started as an unpaid beta tester and build up experience that way.
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White box testing is testing from the inside--tests that go in and test the actual program structure. \n\nBasis path testing: Very simply, test every statement in the program at least once. You'll note that the testing department at FCC chose test cases that did this; the entire execution tree was covered. \nBasis path testing is MANDATORY--so much so that there are software products written especially to assist in it. \n\n\nProfiling: There are a lot of tools--often included with compilers--which show where the CPU is spending most of its time in a program. Naturally, the busiest parts of the program are the ones you want to test most. \n\nLoop tests: Exercise each DO,WHILE,FOR, and other repeating statements several times. \n\nInput tests: As the old saying goes--garbage in, garbage out. If a procedure recieves the wrong data, it's not going to work. Each procedure should be tested to make certain that the procedure actually received the data you sent to it. This will spot type mismatches, bad pointers, and other such bugs (these are common!)
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NO,personally beta programs to me mean (bugs) issues,flaws,glitches etc..wait until its released for commercial use
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AFTER BETA VERSION TEST..  :-)
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the error lies in the coding on the end of the developer, not you... nothing you can really do about it...
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A software test engineer prepares test strategies and test plans to test software developed by a development team. It's a most important aspect of quality control. There are many different ways of developing test strategies and plans but most of them are based on system requirements and downstream documents like analysis, design and program specifications.\n\nAs software gets more and more complex, the testing process becomes more and more important.\n\nTesting is required by both user departments/organizations and by development organizations.\n\nTesting is part of validation and verification of systems and depending on the system and application it is required for software, hardware and also for the integrated system.
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The attributes of a good development process include:  frequent feedback from customers, pervasive testing, frequent releases (to encourage customer feedback!) systematic refactoring, and quick response to changes in the code (Continuous integration and testing, ideally).  Scrum and XP both provide these.  A really large project or one with heavy regulatory scrutiny may require additional reviews, evaluations, and other paperwork, but it is unclear (to me at least!) whether or not they provide any additional value.
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beta testing has finished
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computer software must meet some minimum set of requirements. one is speed. others, reliability, compatibility with most systems, low volume of mbytes(low number of lines of code). if a software is not meeting a requirement in one of the above, then it is said the application has some weaknesses about the known situation. a report should include the above 4 issues. in order to do this, the application must be tested in as many different systems as possible. it is usually a teamwork. othervise an alone man could not finish initialisation within months perhaps.
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Here is a complete definition with details...Too much info to type it all in here...\nhttp://en.wikipedia.org/wiki/Software_development
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Since sw development is generally more art than science, I expect testing would be as well. Why the distinction?\n\nThe science of SW testing has to do with objective measurements such as functional cases completed, number of issues raised, percentage of application functions excercised.\n\nThe art part of SW testing involves finding critical dependencies, race conditions, and exception conditions. Since anyone can test the Cow Path of normal program functions, the art of SW testing is a more advanced skill.\n\nLastly, don't listen to developers who won't test -- they're idiots. Our best developers are our best testers since they know where the stress points are and find high severity issues more quickly reliably. The SW industry needs to figure out testing is more advanced than developing -- manufacturing learned that a long time ago.
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White box testing, clear box testing, glass box testing or structural testing is used in computer programming, software engineering and software testing to check that the outputs of a program, given certain inputs, conform to the structural specification of the program.\n\nThe term white box (or glass box) indicates that testing is done with a knowledge of the code used to execute certain functionality. For this reason, a programmer is usually required to perform white box tests. Often, multiple programmers will write tests based on certain code, so as to gain varying perspectives on possible outcomes.