Help Calculating Uncertainty and Error Bars.

I have a simple problem of plotting, with error bars and a linear fit, Resistance (R) from a set of data containing Voltage (V) and Current (I). I figured out how to pull the data and plot the resulting R but I cannot figure out how to add a linear fit or the error bars. I tried errorbar() but I got input error arguments, and I tried calculating the uncertainty by finding the difference from the mean and adding that as an input, but so far nothing has really worked. Any help would be appreciated. I cannot use the interface linear fit available in Matlab, it has to be written in the script.

Answer 1

[Star Strider]

I’m not certain what you want to do, but if you want to do a linear fit and calculate the confidence intervals for a linear fit, one approach is: How to plot the confidence interval output of polyparci?