1. The problem statement, all variables and given/known data I'm stuck trying to find the coefficient of variation of this calculation: 18.97(+/-0.04) + 0.0025(+/-0.0001) + 2.29(+/- 0.08)= 21.2625. The numbers in parenthesis are the standard deviations for each value. 2. Relevant equations 3. The attempt at a solution I found the overall standard deviation for the equation but now I don't know what to do to go farther. I worked some example problems with the answers in the back of the book and I got close to the correct answer on all three of them by dividing the overall standard deviation by the sum of the problem. However, I don't think this is correct and my book has no examples of finding the CV of a problem like this. Any help would be appreciated!