Uncertainties
Tables old method
• (max – min)/2
• 1 sf
New method 1
• Standard deviation
• 2 sf
New method 2
• (max – min)/N
• 2 sf
Old method
• g = 9 ± 3 m s¯²
New method 1
• g = 9.4 ± 1.5 ms¯²
New method 2
• g = 9.4 ± 0.3 ms¯²
Now also OK
• Propagation through calculation but no graph
• Curves
• Other
• Tick lists are out
• Don’t let uncertainties...
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Uncertainties

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Uncertainties

  1. 1. Uncertainties
  2. 2. Tables old method • (max – min)/2 • 1 sf
  3. 3. New method 1 • Standard deviation • 2 sf
  4. 4. New method 2 • (max – min)/N • 2 sf
  5. 5. Old method • g = 9 ± 3 m s¯²
  6. 6. New method 1 • g = 9.4 ± 1.5 ms¯²
  7. 7. New method 2 • g = 9.4 ± 0.3 ms¯²
  8. 8. Now also OK • Propagation through calculation but no graph • Curves • Other • Tick lists are out • Don’t let uncertainties spoil a good practical
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