If the Standard Deviations of X and Y Are 12

question 141

True/False

If the standard deviations of x and y are 12.5 and 10.8,respectively,and the covariance is 118.8,then the coefficient of correlation r is 0.88.

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Definitions:

CNS

The central nervous system, comprising the brain and spinal cord, which coordinates and controls most bodily functions.

Myelinated Axons

Axons that are coated with myelin, a fatty substance that speeds up the transmission of nerve impulses, enhancing the efficiency of the nervous system.

Action Potentials

Electrical impulses that are the means by which information is transmitted along neurons and muscle cells.

All-Or-None

The All-Or-None principle is a rule stating that the strength of a response of a nerve or muscle fiber is not dependent on the strength of the stimulus; if the stimulus exceeds the threshold, a complete response is generated.