1. The problem statement, all variables and given/known data For the shortest bar on the bar graph, what is the smallest number of elementary charges that were measured within experimental uncertainty? For the tallest bar, what was the largest number of elementary charges? 2. Relevant equations 3. The attempt at a solution I do not understand what the question is asking me. I have plotted the data. Someone please direct me in the correct direction. Thank you. We weren't given voltage or even the distance between the parallel plates so I'm clueless on what to do.