Question

For the following situation, identify the experimental units (or subjects), the factor(s), the treatment (s) and the response variable.

The ability for pine trees to grow in the shade may help them to thrive in drought conditions. How well do pine trees grow in the shade? Researchers plant small pine trees in a greenhouse in either full sunlight or in sunlight that has been reduced by 10% (through using a shade). At the end of the experiment, they weighed each of the trees.

Answer 1

Units: Pine trees
factors/treatment: full sunlight, reduced sunlight
response: tree growth (weight)

remember, response variable is what is measured
unit is the thing being experimented on
factors/treatment are what is applied to run the experiment.

Answer 2

Thank you so much!1

Answer 3

@mollylasko no problem!