What is a "compression ratio"?

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A The speed at which a file is compressed
B The measure of how much a file is reduced in size
C The quality loss in a video file
D The number of files in a compressed folder

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Answer: B. The measure of how much a file is reduced in size

Explanation: It is the ratio of the size of the compressed data to the size of the original data.

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What is a "compression ratio"?

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