Quoting Uncertainties in Radioactive Decay Counts

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In quoting uncertainties for radioactive decay counts, the use of the square root of the count (sqrt(n)) is a common method. Fractional uncertainty can also be expressed as 1/sqrt(n). A standard practice involves reporting the average plus or minus the standard deviation of the mean. It is recommended to round the standard deviation to two significant digits and match the average's least significant digit accordingly. Consistency in these practices ensures clarity in reporting uncertainties in radioactive decay measurements.
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Is there a standard way of quoting uncertainties for say counting radioactive decay counts?

I know I can use sqrt(n)

And I know I can use fractional uncertainty 1/(sqrt(n)) too.

Is there a standard way of quoting? Apologies if this is in the wrong section
 
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Average +/- standard deviation in the mean

round the standard deviation in the mean off to two significant digits and the average to the same least significant digit as the standard deviation.
 
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