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I got an experimental value that is lower than my accepted value, and that's going to make my error negative. what do I do?
Sure. I am testing the density of a liquid, and the accepted value is 1.2 g/mL. My experimental value came out to be 1.18 g/mL.
I see. Well, it is not uncommon for experimental values to differ slightly from accepted values due to experimental error. In this case, since your experimental value was lower than the accepted value, your error is negative. To address this, you could try repeating the experiment and see if you get similar results. If not, you may need to investigate potential sources of error in your experimental setup.