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A properly designed experiment contains the following:
positive and negative controls and experimental conditions.
positive control and experimental conditions.
positive and negative controls
control and experimental
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- Why is it important to have a control for an experiment?In the experiment described above, state what each of these parts of the experiment was: Independent variable Dependent variable Control group Experimental group One controlled variableThe variable is a part of the experiment that varies or changes. True False
- what is the difference between a quasi-experimental design and an experimental designIn the experiment described above, specifically state what each of these parts of the experiment was: Independent variable Dependent variable Control group Experimental group One controlled variableA well-designed experiment will contain both positive and negative controls. Which of the following is a false statement? Choose one from the following: (A) a positive control experiment is missing some of the components of the experiment and should give a negative result (B) a positive control experiment contains all of the components of an experiment and should give a positive result (C) a negative control experiment is missing the element being tested and should give a negative result (D) if there are multiple components of an experiment, there should be multiple negative controls (E) if a negative control experiment give positives results, it is likely that the experiment is contaminated
- describe some aspects of experimental design that helpto ensure objective and reliable resultsWhat do you call a sample that goes through all the steps of an experiment but is not exposed to the experimental variable? control group dependent variable independent variable all variables/groups are exposed to the experimental variableWhat variable is the one that you can manipulate or change? It is sometimes called experimental variable
- What is the function of a control in an experiment?an independent variable is the variable measured in an experiment. True or FalseThe 'control group' is an essential component of an experiment. This is because 1. A control group allows one to determine if a particular result is due to the experimental variable. 2. No, it's not essential in experimentation. A control group is not always necessary it depends on the experiment. 3. A control group allows for multiple variables to be tested at the same time. 4. A control group is required for the development of a prediction.