Uncertainty flash

• Uncertainty


  The inability to be certain of the accurate or true value of a measurement due to random error
• Determining the level of uncertainty of a group of results

  1. Calculate the range

  2. Divide the range by 2 to get the uncertainty
• Every time a measurement is made, random error can be introduced
• A big source of random error in the experiment is the reaction times of the students
• Range


  The minimum value to the maximum value
• In science, the range must be stated as the minimum and maximum values
• In maths, the range is stated as the difference between the minimum and maximum values
• Calculating uncertainty


  Range / 2
• The uncertainty values indicate the range where the true value is likely to lie