Considerations When Sampling Answers

Two study designs are described here. Which statement is a correct interpretation of the designs?

Scenario B is an example of a observational study.

The placebo was the .

Since the experimental units human beings, they are called .

Since the experimental units human beings, they are called .

Scenario A is an example of a observational study.

This design web represents a/an because the plants subjected to treatments.

The treatment was the liquid.

The placebo was the liquid.

The explanatory variable of this experiment is .

Which of the following could be a potential confounding variable in the experiment? Select all that apply.

This is an example of a(n) .

A potential confounding variable in this experiment could be .

The experimental unit in this experiment subjects.

There are treatments, and they are the .

The factor is the .

Select all the sentences that correctly identify the components of the experiment.

The response variable of this experiment is .

The response variable, may be influenced by more than just the explanatory variable, .

There are treatments, and they are the .