Suppose We Have Data for 1000 Students for a Period

question 7

Multiple Choice

Suppose we have data for 1000 students for a period of one year.The data show that those students who spend more hours studying have a higher grade point average (GPA) .We can say that

• A)if hours of study time increase,then GPA will automatically increase.
• B)having a higher GPA leads students to spend more time studying.
• C)there is a causal relationship between hours of study time and GPA.
• D)more hours spent studying leads to a higher GPA.
• E)there is a positive correlation between hours of study time and GPA.

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Definitions:

Forever

A term indicating an infinite or unspecified period of time, often used in the context of time without end.

Average Total Cost

The cost per unit of output, calculated by dividing the total cost by the quantity of output produced.

Natural Monopoly

A market condition where a single firm can supply a good or service to an entire market at a lower cost than could two or more firms.

Natural Monopoly

A market structure where a single supplier is most efficient in providing goods or services due to high fixed or startup costs.