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Published byIan McDermott Modified over 2 years ago

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Objectives §11 -Make qualitative and quantitative observations §12 - Distinguish between an observation and an inference §13 -Distinguish between an independent and dependent variable

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Types of Observations §Quantitative - notes how many. l 5 days, 6 legs, 10 fingers §Qualitative - description other than a number. l color, taste smell

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Observation vs. Inference §Observation - act of noticing something §Inference - conclusion based on an observation

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Example of an Inference §Observations l it has six legs l it is green l it has three body parts l it has 2 wings

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Example of an Inference §Observations l it has six legs l it is small l it has three body parts l it has 2 wings §inference = It is an insect

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Dependent vs. Independent Variables and Controls §Control-unaltered part of the experiment used as a standard for comparison §Variable- A quantity or quality that is subject to change §Independent variable-variable that is manipulated in an experiment §Dependent variable-variable affected by the independent variable

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