Lesson 3.6 Designing Experiments

What is one of the key components of a well-designed experiment?

• Having only one treatment

• Random assignment

• Ignoring placebo effects

• Using only one participant

Why is it important to have a control group in an experiment?

• To confuse the participants

• To have a baseline for comparison

• To ensure the experiment is longer

• To make the experiment more complicated

What is the benefit of using random assignment in experiments?

• It makes the experiment more expensive

• It helps show causation

• It reduces the number of participants needed

• It ensures participants are confused

What is the placebo effect?

• When a fake treatment seems to work

• When a real treatment has no effect

• When participants know the treatment

• When the experiment is double-blind

In the cattle experiment, why were eyes painted on the cows?

• To make them easier to spot

• To make them look pretty

• To confuse the lions

• To test if it reduces lion attacks