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Answer :
Optical mark recognition (OMR) systems are used to grade standardized tests, including the SAT and GMAT tests, and to record votes in elections.
What is the OMR?
OMR is Optical Mark Recognition, an electronic way of gathering information from bubble multiple-choice forms, such as tests and surveys, by scanning paper to find marks in specific places. The use of bubble sheets for answers on multiple-choice exams is commonly used in the SAT and GMAT tests.
On the other hand, OMR can be used to record votes in elections. An OMR machine will transform the marked selections on a ballot paper into digital format during vote counting so that a computer counting system can process it. The OMR device will shine laser beams into the ovals next to the candidate names when scanning a ballot.
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Final answer:
Optical Mark Recognition (OMR) systems are used to grade standardized tests like the SAT and GMAT, as well as to record votes in elections. These systems work by scanning a document and detecting the presence or absence of marks at specific locations. This allows for speedy and efficient processing of large volumes of papers.
Explanation:
The devices that are used to grade standardized tests such as the SAT (Scholastic Aptitude Test) and the GMAT (Graduate Management Admission Test), as well as to record votes in elections, are known as Optical Mark Recognition (OMR) systems. These systems are designed to scan a document and detect the presence or absence of marks at specific locations, such as the filled-in bubbles on a test answer sheet or a ballot paper.
OMR technology works by using a scanning device which shines a light onto the paper. The light is then reflected back into the sensor within the scanner. Areas of the paper that have been filled in will reflect less light back, and this difference in reflected light allows the scanner to identify the marked areas.
For example, when grading the SAT or GMAT, after the students complete their exams, the answer sheets are collected and fed into the OMR scanner, which then reads and grades the tests. The grades are tabulated and reported. In elections, filled ballots are scanned by an OMR system to count the votes. This technology allows for quick and efficient processing of a large number of documents, such as thousands of test papers or votes.
Learn more about Optical Mark Recognition (OMR) here:
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