Two values of a constant are 15.0 and 18.0. The stated percentage uncertainty is 10%. The percentage difference (relative to the mean) and the conclusion are:

  1. 18%; the relationship is not supported
  2. 36%; the relationship is supported
  3. 3%; the relationship is not supported
  4. 18%; the relationship is supported
Answer

A) 18%; the relationship is not supported

Mean = 16.5; % difference = 3/16.5 × 100 = 18%, which is greater than 10%. SLO P-11-N-24 · Understanding

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