Physics 9702 · AS & A Level · Errors and uncertainties

Errors and uncertainties — practice question

Four students, A, B, C and D, have finished an experiment aimed at finding the acceleration of free fall, $g$. Each student carried out the experiment three times. The measured values of $g$ are listed in the table. Which set of results shows high precision but low accuracy?

  • Aexperiment 1: $7.2$ , experiment 2: $9.4$ , experiment 3: $8.3$
  • Bexperiment 1: $9.5$ , experiment 2: $9.8$ , experiment 3: $10.2$
  • Cexperiment 1: $9.8$ , experiment 2: $9.8$ , experiment 3: $9.9$
  • Dexperiment 1: $10.1$ , experiment 2: $10.2$ , experiment 3: $10.1$

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