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ziro4ka [17]
3 years ago
9

Doing a physics Lab and need to propagate uncertainty for experimental results. I need the uncertainty in order to add it to my

scatter plot for the error bars, therefore, I need both a positive and a negative error value. How is this done for my data? please show all work
373.67 +/- 15.444

210 +/- 12.82

239.33 +/- 19.98

443.67 +/- 17.99
Physics
1 answer:
alexandr1967 [171]3 years ago
8 0

Answer:

Explanation:

Not really sure what you're trying to do. You propagate uncertainties for indirect measurements, as in when you calculate a value from other values.

What you have here is a series of values of direct measurements it seems.

Anyway, for error bars will have a width of 2 times the uncertainty reported.

For example on the first one

373.67 +/- 15.444

You would have an error bar with a width of 2 * 15.444 = 30.888. This bar would be centered at 373.677. The lowest point of the error bar would be at 358.233 and the highest point at 389.121.

You also mentioned a scatter plot, but scatter plots are 2D at least. Are these measurements associated to something else like time? You need 2 coordinates for each point in a scatter plot.

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