1. Determine if you are required to file a tax return. You are required to file a federal income tax return if you are a citizen or resident of the United States or a resident of Puerto Rico. Your marital status, age, filing method, and income all affect whether or not you are required to file taxes.
proficiency testing. proficiency testing. a program in which specimens of quality control material are periodically sent to members of a group of laboratories for analysis, with each laboratory's results compared with those of its peers. See also: proficiency samples.
Defect is destructive in all st ages of software development. A defect is a flaw, deficiency or inaccuracy in the software. product [1]. Defect remains in the whole life of software; each defect which occurs in the software stages is the defect. in that software.