The half-range uncertainty gives a better estimate than the instrument precision when:

  1. the spread of repeated readings is larger than the instrument's smallest division
  2. readings are identical
  3. only one reading is taken
  4. the spread is smaller than the smallest division
Answer

A) the spread of repeated readings is larger than the instrument's smallest division

Use the larger. SLO P-11-N-14 · Understanding

Physics MCQ · More Experimental Skills and Data Analysis MCQs · Practise