Steve1235321 Posted December 3, 2022 Share Posted December 3, 2022 Hi everybody, I am currently working on a 1st year assignment to make a bar chart of bacterial germ count in (CFU/mL) of various objects that have been disinfected. Since the data between the different objects varies considerably (12 CFU/mL to 3.2 x 10^9 CFU/ml) I thought about log transforming the data. However, I ran into the following: the counts are performed in triplicate, I would like to calculate a standard deviation of this, do I need to calculate the SD (or even the relative standard deviation) of the log transformed data or of the non-log transformed data. Thanks in advance for your answers! Regards, Steve Link to comment Share on other sites More sharing options...
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