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There are two techniques used for operational testing to test the reliability of software: Steady state reliability estimation In this case, we use feedback from delivered software products. Depending on those results, we can predict the future reliability for the next version of product. This is similar to sample testing for physical products.
The environment should be constant throughout testing in order to provide accurate and reliable results. If the testing is a success, we should see a proportional change in performance. For example, if we double the users on the system, we should see a drop in performance of 50%. [6]
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Administering one form of the test to a group of individuals; At some later time, administering an alternate form of the same test to the same group of people; Correlating scores on form A with scores on form B; The correlation between scores on the two alternate forms is used to estimate the reliability of the test. This method provides a ...
Let's look at DirecTV (NAS: DTV) and three of its industry peers, to see how efficiently they use cash. Here are the ROIC figures for each company over a few periods. Here are the ROIC figures for ...
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The first-order reliability method, (FORM), is a semi-probabilistic reliability analysis method devised to evaluate the reliability of a system. The accuracy of the method can be improved by averaging over many samples, which is known as Line Sampling .
Hughes Electronics Corporation was formed in 1985 when Hughes Aircraft was sold by the Howard Hughes Medical Institute to General Motors for $5.2 billion. Surviving parts of Hughes Electronics are today known as DirecTV Group, while the automotive divisions became Aptiv.