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2 cards from this section. Quick, good the night before a test.
Calculate the combined uncertainty of 5.0 ± 0.2 and 3.0 ± 0.1.
Use δQ = sqrt[(σx)² + (σy)²].
If A = 10.0 ± 0.5 and B = 25.0 ± 1.0, what is the total uncertainty when adding A and B?
Add in quadrature.
What is the correct way to combine uncertainties when adding two measurements?
Think about how errors might interact when measurements are combined.
True or False: Adding uncertainties linearly gives a more accurate result.
Recall the rules of propagation of error.
An experiment measures a length twice with results 10.0 ± 0.1 cm and 10.5 ± 0.2 cm. Calculate the total length with appropriate uncertainty.
Follow the addition and quadrature principles.
You add three measurements: A = 5.0 ± 0.1, B = 3.0 ± 0.2, C = 2.0 ± 0.3. What is the total with uncertainty?
Be careful with the total uncertainties.
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