# data[].attributes.body
The dependent variable is the effect. Its value depends on changes in the independent variable.

# data[].attributes.body
A control group is an essential part of an experiment because it allows you to eliminate and isolate these variables.

# data[].attributes.body
the control variable is not changed in the experiment and that allows the relationship between other variables being tested easier to understand.

# data[].attributes.body
Because we need the cause and effect.

# data[].attributes.body
you need a control group because its different from the ress\t of the experiment, the independent variables tested in the experiment cannot influence the results.

# data[].attributes.body
It is used in an experiment to see if you project actually works.

# data[].attributes.body
Because independent and dependent variables are just like cause and effect and without cause and effect whats the point of a science experiment.

# data[].attributes.headline
something that can be independent or be on its own and something that depends on something

# data[].attributes.subject
something that can be independent or be on its own and something that depends on something

# data[].attributes.body
Independent changes and controls.
dependent tests and measures.

# data[].attributes.body
So it doesn't effect the end result in a way to make it confusing to the tester.

# data[].attributes.body
So we can accurately test the hypothesis in questions.

# data[].attributes.body
So we can test what has changed and see how it effects the end result.