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10 March, 20:26

What investigations allow for the control of variables

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  1. 10 March, 21:03
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    Dependent - - is what will be measured; it's what the investigator thinks will be affected during the experiment.

    For example, the investigator may want to study coffee bean growth. Possible dependent variables include: number of beans, weight of the plant, leaf surface area, time to maturation, height of stem.

    Independent - - is what is varied during the experiment; it is what the investigator thinks will affect the dependent variable.

    In our coffee bean example, possible independent variables include: amount of fertilizer, type of fertilizer, temperature, amount of H2O, day length, all of these may affect the number of beans, weight of the plant, leaf area, etc.
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