I'm a physics student trying to use excel for my experimental data.
After inputting my values and their uncertainties (the error of the values),
I plot the values to find the slope and intercept but I can't find a way to
include their errors. It's possible to include error bars, but they're just
for show and don't actually do anything.

Is there a way for excel to calculate the error / uncertainty of a slope and
intercept?