Data Collection & Experimental Design

Front

What is the explanatory variable in an experiment?

Back

The explanatory variable is the factor that is manipulated or changed in an experiment to observe its effect on the response variable.

Front

What type of sampling involves assigning numbers to subjects and selecting them randomly?

Back

This is known as simple random sampling.

Front

What is a control group in an experiment?

Back

The control group is the group that is not exposed to the treatment and serves as a comparison for evaluating the effect of the treatment.

Front

What are the principles of a well-designed study?

Back

The principles include randomization, replication, and control.

Front

What type of sampling involves selecting entire groups or clusters?

Back

This is known as cluster sampling.

Front

What is the response variable in an experiment?

Back

The response variable is the outcome that is measured to see if it is affected by the explanatory variable.

Front

What is the purpose of randomization in experimental design?

Back

Randomization helps to eliminate bias and ensures that the treatment groups are comparable.

Front

What is replication in the context of experimental design?

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Replication refers to repeating the experiment multiple times to ensure that the results are consistent and reliable.

Front

What is the difference between observational studies and experiments?

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Observational studies involve observing subjects without manipulation, while experiments involve manipulating one or more variables to determine their effect.

Front

What is a sample in research?

Back

A sample is a subset of a population that is selected for the purpose of conducting a study.