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I've been looking in the archives to get a method of accurately measuring cell doubling time and I found posts that pointed to this website here.
Seems very useful, however, when i plug in the following data for an experiment ........
...... it generates a graph giving an equation of ......... "amount=946090.4145*e0.0307*time"
My problem is that when I plug the same data into excel and generate the graph there with an exponential trendline, the equation comes out as ......... y = 664510e0.0362x
Using the "doubling time = ln(2)/growth rate" formula, this results in quite a different answer.
Can anyone explain the discrepancy to me? Does the website use a different trendline calculation?