Scientific method and variables

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What is the scientific method?

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A systematic process used for scientific investigation, involving observation, hypothesis formulation, experimentation, and conclusion.

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What is a dependent variable?

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The variable that is measured or observed in an experiment; it responds to changes in the independent variable.

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What is an independent variable?

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

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What is a controlled variable?

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Variables that are kept constant throughout an experiment to ensure that the results are due to the independent variable.

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What is a hypothesis?

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A testable prediction about the relationship between two or more variables.

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What is the purpose of a control group in an experiment?

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To provide a baseline for comparison against the experimental group that receives the treatment.

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What type of graph is best for showing changes over time?

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Line Graph.

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What is a bar graph used for?

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To compare quantities of different categories.

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What is a pictograph?

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A graph that uses pictures or symbols to represent data.

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What is a histogram?

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A type of bar graph that represents the frequency distribution of numerical data.