Controlled Experiments & Line Graphs

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What is a Line Graph?

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A line graph is a type of chart that displays information as a series of data points called 'markers' connected by straight line segments. It is commonly used to show trends over time.

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What is a Control Group in an experiment?

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A control group is a group in an experiment that does not receive the treatment or intervention being tested. It serves as a baseline to compare the effects of the treatment.

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What is an 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 Dependent Variable?

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The dependent variable is the variable that is measured and affected in an experiment. It depends on the independent variable.

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What is a Manipulated Variable?

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The manipulated variable is another term for the independent variable. It is the factor that is intentionally changed in an experiment.

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What is a Controlled Variable?

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A controlled variable is a factor that is kept constant throughout an experiment to ensure that the results are due to the independent variable.

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What is the purpose of a hypothesis in an experiment?

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A hypothesis is a testable prediction about the relationship between the independent and dependent variables.

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How do you determine the independent variable in an experiment?

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The independent variable is determined by identifying what factor is being changed or manipulated by the experimenter.

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What is the significance of using a control group?

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Using a control group allows researchers to isolate the effects of the independent variable and determine if the treatment had an effect.

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What type of data is best represented by a line graph?

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Line graphs are best for displaying continuous data that changes over time, such as temperature or growth measurements.