Variables

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What is a variable in scientific experiments?

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A variable is any factor, trait, or condition that can exist in differing amounts or types in an experiment.

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What is the dependent variable?

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The dependent variable is the variable that is being measured or observed in an experiment; it is the outcome that is affected by changes in the independent variable.

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What is the independent variable?

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The independent variable is the variable that is changed or controlled in a scientific experiment to test its effects on the dependent variable.

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What is a control group?

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The control group is the group in an experiment that does not receive the treatment or independent variable, serving as a baseline for comparison.

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What is a hypothesis?

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A hypothesis is a testable prediction about the relationship between two or more variables in a scientific investigation.

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What is an inference?

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An inference is a logical conclusion or prediction made based on observations and prior knowledge.

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What is a constant in an experiment?

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A constant is a factor that remains unchanged throughout the experiment to ensure that the test results are valid.

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What is the purpose of an experiment?

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The purpose of an experiment is to test a hypothesis by manipulating variables and observing the effects.

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What is qualitative data?

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Qualitative data is descriptive information that cannot be measured numerically, often involving characteristics or qualities.

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What is quantitative data?

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Quantitative data is numerical information that can be measured and expressed mathematically.