The Heart's Natural Rhythm, Determined by Its Pacemaker in the Absence

question 25

Multiple Choice

The heart's natural rhythm, determined by its pacemaker in the absence of any input from the autonomic nervous system, is approximately beats per minute.

• A) 50
• B) 70
• C) 90
• D) 110

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Definitions:

Categorical Variable

A type of variable that can take on one of a limited, and usually fixed, number of possible values, assigning each individual or other unit of observation to a particular group or nominal category.

Social Security Number

A unique nine-digit number assigned to U.S. citizens, permanent residents, and temporary working residents that is used for tracking individuals for social security and taxation purposes.

Age

The length of time that a person or entity has been alive or existed.

Statistics Class

An academic course focused on the study of collecting, analyzing, interpreting, presenting, and organizing data.