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Experimental Design - Variables

Experimental Design - Variables. Identifying Variables. List four variables that exist for each situation: Ex: What variables can affect the sprouting of a plant seed? 1. amount of water received 2. amount of sunlight 3. amount of fertilizer 4. age of the seed.

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Experimental Design - Variables

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  1. Experimental Design - Variables

  2. Identifying Variables List four variables that exist for each situation: Ex: What variables can affect the sprouting of a plant seed? 1. amount of water received 2. amount of sunlight 3. amount of fertilizer 4. age of the seed

  3. Identifying Variables (List four for each) • What variables can affect the attendance at a football game? • What variables can affect the taste of a soft drink? • What variables can affect the speed of a runner in a 100-yard dash? • What variables can affect the amount of fruit produced by an apple tree? • What variables can affect the amount of rain an area receives?

  4. Identifying Variables • List the independent, dependent, and controlled variables for each situation: Ex: Students of different ages were given the same puzzle to assemble. The puzzle assembly time was measured. Ind. = different ages of students Dep. = assembly time Cont. = same puzzle

  5. Indentifying VariablesList the independent, dependent, and controlled. • A study was done to find if different tire treads affect the breaking distance of a car. • A study was done to measure the cleaning effectiveness of different brands of dishwashers. They all had the same water source. • A study was done to see how the length of the blades of helicopters affected their maximum flying speed.

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