Michelle and Todd calculated the averages and standard deviations for several types of measurements. They got into a rote mood and copied all the digits that appeared on their scientific calculator. Please boil these down to the “correct” number of significant figures and state how many significant figures is being reported for each best estimate.
(a) 82.34677662 ± 0.072314389degreesCelsius
(b) 282.5723 ± 2.31684 seconds
(c) – 0.0373749738 ± 0.005174523 Volts
(d) 7648.78349 ± 258.549763 meters (express this answer with and without scientific notation)

Question

Michelle and Todd calculated the averages and standard deviations for several types of measurements. They got into a rote mood and copied all the digits that appeared on their scientific calculator. Please boil these down to the “correct” number of significant figures and state how many significant figures is being reported for each best estimate.
(a) 	82.34677662 ± 0.072314389degreesCelsius
(b)   	282.5723 ± 2.31684 seconds
(c)	– 0.0373749738 ± 0.005174523 Volts
(d)	7648.78349 ± 258.549763 meters (express this answer with and without scientific notation)