Which of These Statements About Variables Is True

question 121

Multiple Choice

Which of these statements about variables is true?

• A) A variable must always be very concrete and straightforward.
• B) A variable must always be as abstract as possible.
• C) Research is often designed to discover how variables influence each other.
• D) Only two variables may be included in any particular study.

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Definitions:

Tuition

The fee charged for instruction or education, typically by an educational institution such as a school or university.

Disposable Personal Income

Funds available to families for saving or spending after subtracting income taxes.

Retained Earnings

The portion of net income that is kept by a company rather than distributed to its shareholders as dividends, used for investment or paying off debt.

Social Insurance Contributions

Payments made to social security systems by employers, employees, or the self-employed, used to fund public programs such as pensions, unemployment benefits, and health care.