Step 4 of 4 · topic
Measurements and uncertainties
WJEC 1420QS — matched to your course.
Random/systematic error, uncertainty propagation, graphs and significant figures.
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Measurements and uncertainties
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Subtopics and study areas
- Distinguish random uncertainty from systematic error.
- Calculate absolute and percentage uncertainties.
- Propagate uncertainties appropriately for sums, products and powers.
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Measuring the density of solids
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Subtopics and study areas
- Determine density from mass and carefully measured dimensions, displaced volume or a measured liquid volume.
