Scientific Method & Data Analysis

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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 analysis.

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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 data analysis?

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The process of inspecting, cleaning, and modeling data to discover useful information and support decision-making.

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What is a variable in an experiment?

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Any factor, trait, or condition that can exist in differing amounts or types.

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What is the difference between independent and dependent variables?

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The independent variable is manipulated by the researcher, while the dependent variable is measured to see how it is affected.

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What is a control group?

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A group in an experiment that does not receive the treatment and is used as a benchmark to measure how the other tested subjects do.

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What is the purpose of a graph in data analysis?

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To visually represent data, making it easier to identify trends, patterns, and relationships.

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What does it mean to have a correlation between two variables?

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A statistical relationship between two variables, indicating that when one changes, the other tends to change as well.

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What is the significance of sample size in an experiment?

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A larger sample size generally leads to more reliable and valid results, reducing the impact of outliers.

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What is a trend in data analysis?

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A general direction in which something is developing or changing, often identified through data over time.