Saturday, January 16, 2010

What would be the control variable?

I am doing a graph about blood pressure. The lab was to find the blood pressure of a person while they were resting. Then find the blood pressure after 5 minutes of exercise. Then find the blood pressure again 2 minutes after that. On the graph, time is on the bottom(independent variable) and blood pressure is on the y-axis(dependent variable). What is my control variable?What would be the control variable?
the blood pressure when the person is resting.What would be the control variable?
The control would be the blood pressure while the person was resting because a control is a variable that has not been changed or manipulated. The exercise is the independent variable and the blood pressure after the exercise is the dependent variable. Hope that helps
Yeah the control is the one that you don't alter. The excercise alters the blood pressure so its not controlled
The amount of time to exercise, rest, ect. It's the one that has to be precise.

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