Scientific Investigation, variables, constants, control

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What is an independent variable?

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The independent variable is the factor that is changed or manipulated in an experiment to observe its effect on the dependent variable.

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What is a dependent variable?

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The dependent variable is the factor that is measured or observed in an experiment, which is affected by changes in the independent 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 experimental treatment and is used as a benchmark to measure how the other tested groups do.

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What is the purpose of constants in an experiment?

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Constants are the factors that are kept the same throughout an experiment to ensure that the results are due to the independent variable only.

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How do you identify the independent variable in an experiment?

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The independent variable is identified by looking for the factor that is intentionally changed or varied by the experimenter.

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How do you identify the dependent variable in an experiment?

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The dependent variable is identified by looking for the factor that is measured or observed in response to changes in the independent variable.

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What is a hypothesis?

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A hypothesis is a testable statement or prediction about the relationship between two or more variables.

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What is the difference between qualitative and quantitative data?

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Qualitative data describes characteristics or qualities (e.g., color, texture), while quantitative data involves numerical measurements (e.g., height, weight).

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Why is it important to have a control group in an experiment?

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A control group is important because it provides a standard for comparison, helping to isolate the effects of the independent variable.

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What is the significance of replicating experiments?

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Replicating experiments is significant because it helps to verify results and ensures that findings are reliable and not due to chance.