Selection Bias Is a Threat to Internal Validity Arising from Failure

question 112

Multiple Choice

Selection bias is a threat to internal validity arising from failure to use

• A) a control group.
• B) counterbalancing across conditions.
• C) reliable measuring instruments.
• D) random assignment.

---

Definitions:

Future Payment

A payment that is scheduled to be made at a specified date in the future.

Interest Rate

The cost of borrowing money, usually expressed as a percentage of the amount borrowed.

Net Earnings

The amount of income left after deducting all expenses, taxes, and costs from gross revenue.

Continuous Future

A futures contract that amalgamates several expiry contracts to create a continuous, extended trading period for investors.