There are three values: 2.15*10^-18, 1.97*10^-18, 2.48*10^-18. Average value is 2.20*10^-18
Find the standard deviationto correct number of significant figures. Standard deviation should be reported to same power as the average value.
Please refer to the attached file. Cheers.
The standard deviation is defined as:
where is …
It finds the standard deviation to correct number of significant figures.