A student is trying to determine his reaction time. He takes the following readings:
0.20 s, 0.18 s, 0.19 s, 0.08 s
Which of the following is the best mean value of his reaction time stated with a suitableuncertainty?
A 0.19 ± 0.06 s
B 0.19 ± 0.01 s
C 0.16 ± 0.06 s
D 0.16 ± 0.01 s