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What is a null hypothesis in experiments? How is a null hypothesis used in science experiments?
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- What is the independent variable? What is the dependent variable? Suggest a control for this experiment?What is the difference between an independent and dependent variable. Provide an example of each from a hypothetical experiment.What is the purpose of positive and negative controls in an experiment?
- Compare and contrast random and systematic experimental errors with specific examples either real or fictitious. Explain how these types of errors can be identified and reduced in an experiment.What is control group? Explain the purpose of a control in an experiment.You are asked to draw and explain the goal of the Meselson-Stahl (1958) Experiment as outlined in the classroom. You need to draw your own diagram and use short sentences to explain the steps and/or important points, deductions. Clearly state what happens at each step.
- What is the main idea of pseudoreplication in a manipulative experiment? Give an example problem of pseudoreplication in a manipulative experiment and explain.What is the dependent variable of the experiment?What are some of the assumptions behind the logic of the experiment described in Figure 5.26?