Variables in Experiment Design Quiz

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Questions and Answers

What is the definition of an independent variable?

Variables you manipulate to affect the outcome of an experiment (correct)
Variables that represent the outcome of the experiment
Variables that are randomly assigned to treatment groups
Variables that are held constant throughout the experiment

What is the purpose of the local control in an experiment?

To randomly assign subjects to treatment groups
To ensure the control group receives no treatment
To balance, group, and block experimental units so they are relatively homogeneous (correct)
To replicate the experiment under controlled conditions

What is the key difference between a treatment group and a control group in an experiment?

The treatment group is replicated, while the control group is not
The treatment group is assigned randomly, while the control group is not
The treatment group has varying characteristics, while the control group does not
The treatment group receives the experimental treatment, while the control group receives no treatment (correct)

What is the purpose of replication in an experiment?

To repeat a test under controlled conditions (B) Signup and view all the answers

What is the definition of a dependent variable?

Variables that represent the outcome of the experiment (B) Signup and view all the answers

What is the difference between a completely randomized design and a randomized complete block design?

A completely randomized design assigns subjects to treatment groups randomly, while a randomized complete block design is used when experimental units have varying characteristics (B) Signup and view all the answers