Question

1. a researcher wants to test whether a new fertilizer helps plants grow taller. she applies the fertilizer to some plants and leaves others untreated. she measures the height of each plant after 6 weeks. what are the experimental units?

○ the fertilizer and untreated soil
○ the individual plants
○ the measured heights of the plants
○ the researcher conducting the experiment

Explanation:

Experimental units are the individual entities to which treatments are applied in an experiment. Here, the researcher applies fertilizer (treatment) or leaves untreated (control) to individual plants, so the plants are the experimental units.

Answer:

The individual plants