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The Eurachem/CITAC Guide (3rd edition) Quantifying Uncertainty in Analytical Measurement has given a number of spreadsheet calculation examples. The relative uncertainty gives the uncertainty as a percentage of the original value. Also, you have to calculate the standard deviation which shows how the individual data points are spread out from the mean. Hit Enter or Return. For this method, just pick the data pair with the largest uncertainty (to be safe) - although hopefully, it won’t matter much. Before you dive in and begin calculating uncertainty, it is best … To calculate linearity uncertainty, you will need to perform regression analysis. In other words, it explicitly tells you the amount by which the original measurement could be incorrect. 2. How Do Excel Files Work? If your data is in cells A3, B7, and D2, your formula should look like. This article was co-authored by our trained team of editors and researchers who validated it for accuracy and comprehensiveness. Quoting your uncertainty in the units of the original measurement – for example, 1.2 ± 0.1 g or 3.4 ± 0.2 cm – gives the “absolute” uncertainty. 5. What I don’t like about Excel, when it comes to using it as a metrology based uncertainty calculator or for calibration data collection, is that it mixes data and function in a single file. {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/a\/af\/Calculate-Uncertainty-in-Excel-on-PC-or-Mac-Step-1.jpg\/v4-460px-Calculate-Uncertainty-in-Excel-on-PC-or-Mac-Step-1.jpg","bigUrl":"\/images\/thumb\/a\/af\/Calculate-Uncertainty-in-Excel-on-PC-or-Mac-Step-1.jpg\/aid10003706-v4-728px-Calculate-Uncertainty-in-Excel-on-PC-or-Mac-Step-1.jpg","smallWidth":460,"smallHeight":341,"bigWidth":"728","bigHeight":"540","licensing":"