In Order to Inexpensively Determine the Contamination Level of a Sample

question 23

Multiple Choice

In order to inexpensively determine the contamination level of a sample of water, a new test is known to yield almost exactly the same value when repeatedly used on samples from the same container of water. However, these individual values are not close to the true average contamination level for the large container. The concern with using this new, cheaper test to determine the contamination level for a single sample of water is that this measurement method is not:

• A) unbiased.
• B) random.
• C) valid.
• D) reliable.
• E) variable.

---

Definitions:

Ambiguity

The quality of being open to more than one interpretation; inexactness.

Language Community

A group of people who use the same system of language, symbols, or signs to communicate with one another.

Vague

Lacking clarity or preciseness in thought or expression; not clearly expressed or easily understood.

Ambiguous

Referring to language or statements that have more than one possible interpretation or meaning, often leading to confusion or misunderstanding.