USincome Data Over the Last Sixty Years Suggests That the Distribution

question 115

Multiple Choice

U.S.income data over the last sixty years suggests that the distribution of income

• A)has gradually become more equal over the entire time period.
• B)has gradually become less equal over the entire time period.
• C)gradually became less equal until about 1970, then became more equal from 1970 to 2003.
• D)gradually became more equal until about 1970, then became less equal from 1970 to 2003.

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Definitions:

Analog Output

An electrical signal that represents a continuous physical quantity, used in control systems to drive or modulate external devices.

Electrical Isolation

A technique of preventing direct electrical current flow between two parts of an electrical system, often achieved through the use of optoisolators or transformers, to protect against surges and interference.

Points per Module

The number of inputs or outputs that a single module in a modular system, such as a PLC, can handle or support.