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how to find the percentage uncertainty. In this case the actual value can deviate from the mean 5cm by 1cm so the minimum and maximum. Uncertainty measures the lack of certainty or sureness of an outcome.
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We can use the following formula on the sample data above. Calculate the relative uncertainty. This is then multiplied by one hundred.
Evaluate the equipment reference standards and reagents.
A measurement can then be represented with its associated uncertainty such as X 5 - 1 cm. The formula for uncertainty can be derived by summing up the squares of the deviation of each variable from the mean then divide the result by the product of the number of readings and the number of readings minus one and then compute the square root of the result. Mathematically Uncertainty Formula is represented as. The percent uncertainty is familiar.