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7 Cards in this Set
- Front
- Back
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Scientific Method
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A way of knowing/gathering info about the world and how it works.
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Dependent Variable
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Dependent Variable – that which is being
measured (in this case, the heart rate of the mouse) |
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Independent Variable
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Independent Variable - the part of the
experiment that is predicted to bring about a change in the dependent variable (in this case, the distance of the predator silhouette) |
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Null Hypothesis
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Null hypothesis: is the opposite of the alternative hypothesis and predicts no change or causative
relationship between the variables. |
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Alternative Hypothesis
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Alternative hypothesis: makes a prediction about the outcome of the experiment.
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Controlled Variable
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Control Treatment – this treatment is
exactly like the experimental treatment except that there is no independent variable (in the experimental treatment described in your book, the independent variable – the predator – is not present and is not seen by the control mice). |
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Controlled Variable
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Other things that might affect the results of
the experiment are kept the same in both control and experimental situations and are called controlled or standardized variables. Examples of controlled/standardized variables in the experiment in your lab manual: – age of mice – size of cages – gender of mice – temperature of room – amount of food given to mice prior to experiment – number of times each mouse is tested – size of mice |
