If a Researcher Finds a Negative Correlation Between the Number

question 96

Multiple Choice

If a researcher finds a negative correlation between the number of hours that students play computer games and grades, this means that

• A)computer game playing causes a decrease in grades.
• B)computer game playing causes an increase in grades.
• C)lower grades cause a student to be disinterested in studying and more interested in playing computer games.
• D)an experiment would have to be performed to establish a cause-and-effect relationship between video game playing and grades.

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Definitions:

Rapid Growth

Rapid Growth refers to a significant and faster-than-average increase in the size, revenue, or market share of a company or economy.

Economy

The large system that encompasses all production, exchange, distribution, and consumption of goods and services within a certain area. It involves activities and interactions among individuals, businesses, and governments.

Minimum-Variance Portfolio

A portfolio constructed to achieve the lowest possible risk (variance) for a given level of expected return, optimizing the risk-return tradeoff.

Expected Return

A financial term referring to the average amount of profit or loss an investment is predicted to generate based on historical data.