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 419 downloads

IB Diploma Cambridge University Press

PDF – 861.5 KB 364 downloads

Oxfordphysics 2014 Allfixed Dragged

PDF – 145.8 KB 331 downloads

Multiple Choice Question (Paper 1, IB Questionbank)


Paper 1, 1-20

Word – 295.7 KB 333 downloads

Paper 1, 1-20

PDF – 524.8 KB 350 downloads

Paper 1 Answer, 1-20

Word – 436.7 KB 331 downloads

Unit And Measurement Paper 1 Answer 1 20

PDF – 752.4 KB 350 downloads

Uncertainty And Error Paper 1 Part 2

Word – 451.6 KB 353 downloads

Uncertainty And Error Paper 1 Answer Part 2

Word – 489.1 KB 348 downloads

Uncertainty And Error Paper 1 Answer Part 2

PDF – 681.9 KB 354 downloads

Uncertainty And Error Paper 1 Part 3

Word – 408.1 KB 350 downloads

Uncertainty And Error Paper 1 Answer Part 3

PDF – 1.1 MB 357 downloads

Multiple Choice Question (Paper 2, IB Questionbank)


Uncertainty And Error Paper 2

Word – 102.0 KB 323 downloads

Uncertainty Calculation Problems


Uncertainty Calculation Problem

Word – 21.4 KB 350 downloads

Uncertainty Calculation Problem

PDF – 54.0 KB 336 downloads

More Uncertainty Data Analysis Problems


Uncertainty Data Analysis Problems

Word – 14.3 KB 326 downloads