During Which Part of a Night's Sleep Are REM Sleep

question 44

Multiple Choice

During which part of a night's sleep are REM sleep and dreaming most common?

• A) toward the end of the night's sleep
• B) around the middle of the night's sleep
• C) during the first hours of sleep
• D) at the beginning and the end, but not the middle

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Definitions:

Skewed

describes a distribution that is not symmetrical, with a longer tail on one side of the peak than the other.

Normal Distribution

A probability distribution that is symmetrical around the mean, showing that data near the mean are more frequent in occurrence than data far from the mean.

Standard Deviation

Standard deviation is a measure of the dispersion or variability of a set of data points around their mean, indicating how spread out the data points are.

Sampling Distribution

The chance distribution of a statistical measure derived from numerous samples taken from a particular group.