Important Concepts About Uncertainty


  • Systematic Error - errors resulting from measuring devices being out of calibration. Such measurements will be consistently too small or too large. These errors can be eliminated by pre-calibrating against a known, trusted standard.
  • Random Errors - errors resulting in the fluctuation of measurements of the same quantity about the average. The measurements are equally probable of being too large or too small. These errors generally result from the fineness of scale division of a measuring device. 
  • Precision:Precision refers to the closeness of two or more measurements to each other
  • Accuracy: Accuracy is how close the actual value is to the true/theoretical value.

Source of the image: https://soluzionesolare.com/guides/difference-between-accuracy-and-precision/

Uncertainty Calculation

Lecture For Uncertainty and Error


Additional Formula for HL Students


Practice Problems


Worksheets For Revision Of Topic 1 2
Word – 850.6 KB 279 downloads
IB Diploma Cambridge University Press
PDF – 861.5 KB 249 downloads
Oxfordphysics 2014 Allfixed Dragged
PDF – 145.8 KB 235 downloads

Multiple Choice Question (Paper 1, IB Questionbank)


Paper 1, 1-20
Word – 295.7 KB 217 downloads
Paper 1, 1-20
PDF – 524.8 KB 246 downloads
Paper 1 Answer, 1-20
Word – 436.7 KB 223 downloads
Unit And Measurement Paper 1 Answer 1 20
PDF – 752.4 KB 246 downloads
Uncertainty And Error Paper 1 Part 2
Word – 451.6 KB 238 downloads
Uncertainty And Error Paper 1 Answer Part 2
Word – 489.1 KB 225 downloads
Uncertainty And Error Paper 1 Answer Part 2
PDF – 681.9 KB 243 downloads
Uncertainty And Error Paper 1 Part 3
Word – 408.1 KB 256 downloads
Uncertainty And Error Paper 1 Answer Part 3
PDF – 1.1 MB 251 downloads

Multiple Choice Question (Paper 2, IB Questionbank)


Uncertainty And Error Paper 2
Word – 102.0 KB 220 downloads

Uncertainty Calculation Problems


Uncertainty Calculation Problem
Word – 21.4 KB 229 downloads
Uncertainty Calculation Problem
PDF – 54.0 KB 234 downloads

More Uncertainty Data Analysis Problems


Uncertainty Data Analysis Problems
Word – 14.3 KB 211 downloads