How do I calculate the error value given the following data?

Hi 

For our chemistry class we obtained the following results for concentration calculations used to determine the Nernst Distribution Law for our experiment:

PART 1

0.00096
0.00077
0.00058
0.00037
0.00017

PART 2

0.00016
0.00012
0.00010
0.000066
0.000029

The concentrations were then used to determine 'N' or the Distribution Coefficient for each 'set' of results (Value from Part 1 / Value from Part 2) as represented below:

 0.00096 / 0.00016 = 6.00
 0.00077 / 0.00012 = 6.42
 0.00058 / 0.00010 = 5.80
 0.00037 / 0.000066 = 5.60
 0.00017 / 0.000029 = 5.86

The total average of these N values = 5.93 which is my final average for the Distribution Coefficient (N) from both parts of the experiment. The question also asks to provide the error value along with this answer, how do I do this?? Is there an equation because I am really stuck on something I assume is really simple 

If anybody could help me that would be amazing, thanks kindly.