One Element in Cleaning the Data Set in the Mining

question 109

Multiple Choice

One element in cleaning the data set in the mining process involves

• A) removing unimportant variables
• B) adding more variables to the data set
• C) calculating the adjusted R²
• D) calculating the coefficient of multiple correlation

---

Definitions:

Stimuli

External elements or occurrences that influence physical or psychological responses.

Dreams

A sequence of thoughts, images, and sensations occurring in a person's mind during sleep.

NREM Sleep

A phase of sleep characterized by non-rapid eye movement, consisting of stages 1-3, each deeper than the last, and associated with physical and mental restoration.

REM Sleep

A unique phase of sleep characterized by rapid eye movements, low muscle tone, and vivid dreams, playing a key role in emotional regulation and memory.