Mastering Experimental Design
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Questions and Answers

Which variable is manipulated in an experiment?

  • Qualitative variable
  • Independent variable (correct)
  • Control variable
  • Dependent variable

    • Which variable changes as a result of manipulating the independent variable?

  • Dependent variable (correct)
  • Control variable
  • Independent variable
  • Qualitative variable

    • What type of values can be collected to measure the results of an experiment?

  • Both quantitative and qualitative values (correct)
  • Quantitative values
  • Control values
  • Qualitative values

    • In the example experiment with plants, what was measured each week for six months?

    <p>Plant's height</p> Signup and view all the answers

    What was the purpose of the experiment conducted by the pharmaceutical company?

    <p>To test the medication's effectiveness</p> Signup and view all the answers

    Which one of the following is the definition of accuracy?

    <p>How close the values collected are to the real value</p> Signup and view all the answers

    Which one of the following is the definition of precision?

    <p>How close all measurements are to one another</p> Signup and view all the answers

    What is the purpose of the scientific method?

    <p>To test hypotheses</p> Signup and view all the answers

    Which step in the experimental design process involves defining the variables?

    <p>Step 1</p> Signup and view all the answers

    What is the dependent variable in an experiment?

    <p>The variable that is measured</p> Signup and view all the answers

    Which variable is manipulated in an experiment?

    <p>Independent variable</p> Signup and view all the answers

    Experimental design is used to test a hypothesis through a series of steps in order to create controlled conditions for an experiment. What is the purpose of creating controlled conditions?

    <p>To limit the exposure to outside interference</p> Signup and view all the answers

    What is the difference between a scientific theory and a scientific law?

    <p>A scientific theory explains why things occur after significant repeated experiments, while a scientific law is a pattern typically established through an equation</p> Signup and view all the answers

    What is the outcome of an experimental investigation conducted through experimental design?

    <p>To form a conclusion based on the hypothesis</p> Signup and view all the answers

    What do scientists need to have in order to design a good experiment?

    <p>Background knowledge in the area of the experiment</p> Signup and view all the answers

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