Is the Study Presented Above a Controlled Experiment

question 39

Multiple Choice

Is the study presented above a controlled experiment?

• A)Yes, because only the amount of fertilizer was changed, everything else was kept the same.
• B)Yes, because many pots were used.
• C)No, because the experiment was done only once.
• D)No, because several different amounts of fertilizers were used, not just one amount.

---

Definitions:

Random Sampling

A method of selecting a sample from a population in such a way that every individual has an equal probability of being chosen.

Representative Sample

A representative sample is a subset of a population that accurately reflects the members of the entire population.

Generalize

To draw a broad conclusion from specific instances, allowing for the application of findings in a general context.

Correlation

A statistical measure that describes the extent to which two variables change together.