Hi everybody,

This is my question. I have two set of data: set A (from A1 to A8) and set B
(also from B1 to B8). Each value of both sets are calculated as average of a
distinct group of measures and has its associated standard deviation.

Then I have another set of value (set C, the one I want to plot as final
results) which is calculated as the ratio between each A value and correspondent
B value (for example A1/B1, A2/B2, ecc.).

How can I calculate a confidence interval for set C values to use to plot error
bars?

Thanks a lot.
Edoardo