( Controlling Variables )The skills to define and control variables refers to this point indicate a variable tree. Variables, and the variables that control a specific hypothesis. A variable is something that causes that cause various effects, or whatever we want to experiment to see if this is the cause that produces results like that? Variables is a result of the variable tree. When a variable or something that is causing change to. Variables, or, what is the outcome will change. Controlled variable is something other than the initial variables affect the trial, with which you will be required to control the same, otherwise it might cause results discrepancies. That ability shows that there is a skill, and then assign the variable and indicator pointer is started. Variables, and the variables that need to be in control.
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