1. The problem statement, all variables and given/known data I am doing an experiment where I try to the determine the mean lifetime of muons. I collected enough data and I put it in a histogram (attached file), but I have no idea how to calculate the mean lifetime with this. 2. Relevant equations y(t)=Ne^(-t/τ), where τ is the mean lifetime and N the initial amount of muons 3. The attempt at a solution I plotted a trendline in excel and got a line with the formula y=-4.85ln(x)+10.637, which wasn't very helpful. Because the histogram shows the amount of muons that decays and not the amount of muons left I thought I should use dy/dt=Ne^(-t/τ)*(-1/τ), but this hasn't gotten me any closer either.