Hi, I am just curious as to what's the proper way to fit a curve to data and also take into account the variance of the data. Consider this example here https://au.mathworks.com/help/stats/examples/curve-fitting-and-distribution-fitting.html?prodcode=ML&requestedDomain=www.mathworks.com, where they measure concentration at different times. They plot this as a time vs concentration scatter plot and can fit a curve using nlinfit.
I want to know what if I take multiple concentrations measurements for each time. Can I still use nlinfit for this? How can I preserve the variance of concentration in my curve?
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