Data Mining Occurs on Structured Data That Are Already in a Database

question 50

True/False

Data mining occurs on structured data that are already in a database or a spreadsheet.

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Definitions:

N1 Sleep

The initial stage of sleep in the sleep cycle, characterized by light sleep where one can be easily awakened.

N2 Sleep

A stage of sleep characterized by the presence of sleep spindles and K-complexes, representing a deeper sleep phase than N1 and preceding the deeper N3 stage of non-REM sleep.

N3 Sleep

N3 sleep, also known as deep sleep or slow-wave sleep, is the third stage of non-REM sleep, characterized by the deepest level of sleep and the hardest from which to awaken.

REM Sleep

A phase of sleep characterized by rapid eye movements, during which vivid dreams commonly occur. It is considered essential for emotional regulation and memory processing.