Measured values are given with a sensible number of significant figures because:

  1. calculators require it
  2. it removes uncertainty
  3. more figures are always better
  4. the number of figures shows the precision of the measurement
Answer

D) the number of figures shows the precision of the measurement

Extra digits would claim a precision that wasn't achieved. SLO P-11-A-07 · Understanding

Physics MCQ · More Physical Quantities and Measurement MCQs · Practise