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Which of the following is the most important component when selecting data for evaluating the logic in a new or updated application?
A sufficient quantity of data for each test case
Completing the test on schedule
A random sample of actual data
Data representing conditions that are expected in actual processing
Selecting the right kind of data is key in testing a computer system. The data should not only include valid and invalid data but should be representative of actual processing; quality is more important than quantity. It is more important to have adequate test data than to complete the testing on schedule. It is unlikely that a random sample of actual data would cover all test conditions and provide a reasonable representation of actual data.
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