200
Out of the 3 group of measurements,
1.) (3.67 g, 3.68 g, 3.67 g, 3.66 g)
2.) (4.561 g, 4.562 g, 4.560 g, 4.559 g)
3.) (4.1 g, 4.1g, 4.0 g, 4.2 g)
the group which has the most precision is ______________________
What is the 2nd group of measurement?