For Each of the Following, Indicate Whether the Data Are

question 7

Essay

For each of the following, indicate whether the data are cross-sectional or time series:
• Weekly receipts at a clothing boutique
• Monthly demand for an automotive part
• Percentage of adults who bank online

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Definitions:

Sleep Cycles

The phases of sleep that an individual goes through in a typical night, including stages of non-REM (Rapid Eye Movement) and REM sleep, each characterized by different brain activities and physiological responses.

Longitudinal Study

A research method that studies the same subjects over a period of time, often years or decades, to observe changes and developments.

Sleep Study

A test conducted to diagnose and understand sleep disorders, typically involving the monitoring of various physiological functions during sleep.

Newborns

Infants in their first few weeks of life, focusing on this critical developmental stage characterized by rapid growth and adaptation to the external environment.