Thursday, December 15, 2011

What is the control variable?

We performed an experiment in my biology lab in order to test neuromuscular response time. Basically, we did that popular experiment with the ruler in which one person drops a ruler and another one catches it. Anyway, for the experiment, we were seeing the differences between men and women.





So, I know the independent variable is gender and the dependent variable is reaction time.





Is there a control variable?? If so what is it?? (All we did was drop the ruler twice for each person within our lab groups) Please help!





By the way: To standardize the experiment: We made the people dropping the ruler drop it with their right hand at the same height using the same type of meter stick.





Thank you!|||If anything in my brain is correct, then the control variable of the experiment could be the room you are in, it isn't a such noticed variable, so let's say. 10 experiments are done, correct? Okay, 10 experiments that are the same as what you are doing,are done in a specific room, thus the room is the environment of the experiment. The control variable is a variable that does not change, it is the constant variable of the 3 variables. Such as, Independent, and Dependent. So if any it might be the environment in which the experiment was held. Unless you are referring to the controlled variable, which would be another term for the Independent Variable.|||the control would be what ever is not the variable, the norm. the norm would be the ruler because it is never changing it is the same.

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