1. The problem statement, all variables and given/known data Hi. I don't know if this is the right place to talk about my problem. Anyway, here it is: I've made a classic experiment to find g. For that I used a gravitational pendulum and measured several periods of oscillation for differentes values of L. After that, i made a linear regression and using the slope i got g. Now I have to estimate a value for the uncertainty of the value of g that i obtained. The thing is. I have to consider several different uncertainties!: uncertainty of L, uncertainty of T, reaction time and the uncertainty on linear regression (that was made "by eye"). How do I get all this together to get a single value of uncertainty?? How do i even get the value for the uncertainty on linear regression? I would be very appreciate if someone could help me!! Thanks guys! 2. Relevant equations No idea!!