If a Particular Set of Data Is Approximately Normally Distributed

question 181

Multiple Choice

If a particular set of data is approximately normally distributed, we would find that approximately

• A) 2 of every 3 observations would fall between ±1 standard deviation around the mean.
• B) 4 of every 5 observations would fall between ±1.28 standard deviations around the mean.
• C) 19 of every 20 observations would fall between ±2 standard deviations around the mean.
• D) All the above.

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Definitions:

Peripheral Nervous System

The portion of the nervous system lying outside the brain and spinal cord, which includes nerves that branch out to the rest of the body, facilitating communication between the body and central nervous system.

Central Nervous System

The primary information-processing center of the body, consisting of the brain and spinal cord.

Somatic Nervous System

The part of the peripheral nervous system that handles voluntary control of body movements via skeletal muscles.

Sympathetic Nervous System

A component of the autonomic nervous system that readies the body for immediate action during emergencies, known as the "fight or flight" response.