What Method Is Used to Read a Bar Code

question 124

Multiple Choice

What method is used to read a bar code?

• A)The magnetic bar codes are converted by a bar code reader into a form that a computer can process.
• B)A laser translates the bars on the bar code into digital signals that are stored in RAM.
• C)A laser scanner produces light beams that pass through a scanner filter which then translates the light patterns into digital patterns that can be interpreted by the CPU.
• D)A bar code reader uses laser beams to read bar codes.

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Definitions:

Representative Sample

A subset of a population that accurately reflects the members of the entire population.

Sophisticated Statistics

The use of advanced and complex statistical methods and analyses to understand and interpret data.

Spurious Relationship

A relationship between two variables that appears to have a direct correlation but is actually caused by changes in a third variable not apparent in the initial analysis.

Accidental

Occurring by chance or without intention, often resulting in unexpected outcomes or events.