Scientific Method Quiz: Experimental Design

What is the purpose of a control group in an experiment?

• To confuse the results

• To eliminate the need for a control group

• To ensure the experiment is biased

• To provide a baseline for comparison

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NGSS.HS-LS1-3

Explain the difference between independent and dependent variables in an experiment.

• The dependent variable is controlled by the researcher, while the independent variable is being measured

• The independent variable is the result of the experiment, while the dependent variable is the cause

• The independent variable is manipulated by the researcher, while the dependent variable is being measured or observed for changes.

• The independent variable is observed, while the dependent variable is manipulated

List the steps of the scientific method in the correct order.

• Test your hypothesis by doing an experiment, Ask a question, Construct a hypothesis, Do background research, Analyze your data and draw a conclusion, Communicate your results

• Do background research, Construct a hypothesis, Test your hypothesis by doing an experiment, Ask a question, Communicate your results, Analyze your data and draw a conclusion

• Ask a question, Do background research, Construct a hypothesis, Test your hypothesis by doing an experiment, Analyze your data and draw a conclusion, Communicate your results

• Ask a question, Test your hypothesis by doing an experiment, Communicate your results, Analyze your data and draw a conclusion, Construct a hypothesis, Do background research

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NGSS.MS-PS1-2

Why is it important to have a large sample size in an experiment?

• To make the experiment more complicated

• To reduce the margin of error and increase the reliability of the results.

• To make the experiment more expensive

• To make the experiment more time-consuming

What is the difference between qualitative and quantitative data?

• Qualitative data is objective, while quantitative data is subjective.

• Qualitative data is precise, while quantitative data is vague.

• Qualitative data is descriptive, while quantitative data is numerical.

• Qualitative data is numerical, while quantitative data is descriptive.

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NGSS.HS-LS2-2

Describe the importance of having a clear hypothesis in an experiment.

• A clear hypothesis is only necessary for certain types of experiments

• A clear hypothesis can limit the scope of the experiment

• Having a clear hypothesis helps to focus the experiment and guide the research process.

• A clear hypothesis is not important in an experiment

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NGSS.HS-PS1-2

NGSS.HS-PS3-4

Explain the concept of randomization in experimental design.

• Randomization has no impact on the reliability of the experiment

• Randomization only works for certain types of experiments

• Randomization is only necessary for small-scale experiments

• Randomization helps to reduce bias and ensure that the results of the experiment are more reliable and generalizable.

What are the advantages of using a double-blind study in scientific research?

• Increasing accuracy and precision of results

• Maximizing bias and decreasing reliability of results

• Reducing the control over variables in the study

• Minimizing bias and increasing reliability of results

Discuss the importance of replicating an experiment.

• To ensure the reliability and validity of the results.

• To add unnecessary complexity

• To make the results more confusing

• To save time and resources

Tags

NGSS.HS-PS4-4

How can bias be minimized in experimental design?

• Using randomization, blinding, and controlling for confounding variables

• Not blinding the participants

• Ignoring confounding variables

• Using only one group for the experiment