[gmx-users] How do I calculate the difference between two energy values?

[Peter Stern]

I believe that this is a statistics question and not a gromacs question :-).

51.4 +/- 1.33 kJ/mol

Sent from my iPad

> On 25 באוג׳ 2015, at 14:44, minky son <minky0710 at gmail.com> wrote:
> 
> Dear GROMACS users,
> 
> I have been studying free energy calculation in Justin tutorial.
> 
> I performed VDW decoupling and coulomb decoupling simulations separately.
> 
> I obtained the free energy values for each simulation using gmx bar.
> 
> coulomb decoupling simulation = 60.88 +/- 0.23 kJ/mol
> VDW decoupling simulation= -9.48 +/- 1.31 kJ/mol
> 
> So, I want to calculate the sum of the two energy values,
> 
> specially the second term (51.4  +/- ???).
> 
> 
> Please give me any advice to solve this.
> 
> Regards,
> -- 
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