A Researcher Correlated Achievement Test Scores in Mathematics and Science

question 100

Multiple Choice

A researcher correlated achievement test scores in mathematics and science, but later learned that the tests were too easy for the students.The outcome of the correlational analysis will be

• A) the same as if the researcher had used tests of appropriate difficulty.
• B) spuriously high because the easy exams will produce high scores and therefore high correlations.
• C) genuinely high.
• D) low because the easy tests will restrict the variation in scores on the two tests.

---

Definitions:

Marginal Product

The increase in output that arises from an additional unit of input, holding all other inputs constant.

Factors of Production

Resources used in the production of goods and services, including labor, capital, entrepreneurship, and land.

Total Income

The aggregate amount of money earned by an individual or organization from all sources before taxes or deductions.

Marginal Productivity

The extra output that is produced by using one more unit of a variable input, while keeping the quantities of other inputs constant.