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| partiality that prevents objective consideration of an issue or situation |
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| something for granted or accepted as true without proof |
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| an individual or group used as a standard of comparison in a controlled experiment |
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| a test of the effect of a single variable by changing it while keeping all other variables the same |
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| factor in an experiment that a scientist wants to observe, which may change because of the manipulated variable; also known as the responding variable. |
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| possible explanation for a set of observations or possible answer to a scientific question |
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| factor in an experiment that a scientist purposely changes |
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| logical interpretation based on prior knowledge or experience |
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| well-tested explanation that unifies a broad range of observations |
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| a statement that describes some aspect of a phenomenon that is always true |
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