What Does It Mean for a Time-Series to Be Stationary

question 2

Essay

What does it mean for a time-series to be stationary? Why is this desirable? Explain.

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Definitions:

Hypothalamus

A region of the brain below the thalamus that coordinates both the autonomic nervous system and the activity of the pituitary, controlling body temperature, thirst, hunger, and other homeostatic systems.

Tentorium Cerebelli

A fold of the dura mater that separates the cerebellum from the inferior portion of the occipital lobes.

Falx Cerebri

A strong, arched fold of dura mater that descends vertically in the longitudinal fissure between the two cerebral hemispheres of the brain.

CNS

Central Nervous System, comprising the brain and spinal cord, responsible for processing and transmitting information throughout the body.