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 spoil a good practical