Basically, it means that ANYTHING that can change in an experiment is a
variable. We'll use plants as an example. The variables are: plant
growth, sunlight, temperature, water, soil type, plant type, whether or
not you play music to the plant, etc.
Now some of those variables will be controlled and kept the same to
ensure that you are only testing one variable (if you're testing if
playing music to plants makes them grow then you will control the
sunlight, water, soil type, plant type, etc. to make sure that nothing
else can effect the plant). The variable you are intentionally changing
is of course the independent variable (in this case the music) and what
you are hypothesizing will change because of the difference in the
independent variable is your dependent variable (the plant growth.)
May 22nd, 2015
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