Sample Lab Report

I will discuss my choice at the end of this report how

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Unformatted text preview: y thumb on the ruler indicates how far I let the ruler drop, which we can use to calculate the time between when it was dropped and when I caught it. And we’re going to take two data sets: one for when I’m not distracted, and one for when I am distracted. To distract myself, I am going to play Angry Birds with my free hand, and try to put most of my attention on Angry Birds. So in that case, I’m not looking at the drop apparatus. This mimics the situation in which a driver is paying attention to his phone instead of the road. I will discuss my choice at the end of this report. How many trials should you do? The number of trials I should do depends on the systematic errors present in the experiment. The two most evident sources of systematic error are the smallest interval size on my ruler (0.001 m) and the error in length of my ruler. By comparing several of the rulers in the lab, I noticed that their lengths varied by up to 0.002 m. Assuming some reasonable values for the average time and length I let the ruler fall, I calculated that I can Jake Mokris (with Ji Kim) Group 0 September 18, 2011 do 2727 trials before my statistical error hits the systematic error plus smallest increment error. Now, I don’t have enough time to do that many trials; I just did 20 trials for each data set. As long as my value for the standard error doesn’t end up being smaller than the systematic error, I am okay. How should you present your data? I will make five plots, of how the distance I let the ruler fall/my reaction time...
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