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Important terms

Experimental design

A prediction about the possible relationship between two or more factors (variables) in an experiment. A ___inference Example: If you increase the amount of light plants receive, the height of plants will also increase.
_: Factors that can vary or be change in an experiment. ____variable____Example: amount of light, type or fertilizer, source of water; type of plant, height of plants.
The factor that is purposely changed in the experiment. Variable: Independent varible
The factor that changes as a result of what is purposely changed. Dependent Variable
Factors that are kept the same in the experiment. constints Example: All plants receive the same amount of water, same type of plant is used, weather conditions are the same for all plants
repetition of an experiment using many plants to increase accuracy in the data and thereby reduce the effects of chance or random errors that may occur in a single trial. Trail is Example: for each color of light, 10 plants are used
The group that is used as a standard for comparison in an Controlled group Example: The group of 10 plants that received no light or those that receive the “normal” amount of light can be designated as the control.
The group(s) in which a variable is intentionally changed. Experimental groups Example: The group(s) of plants that receive different amounts of light.
Created by: 3059192