The thickness of a metal sheet is measured in five different places along its edge. The results are shown below:
2.82 mm,2.86 mm,2.78 mm,2.84 mm,2.80 mm 2.82\text{ mm}, \quad 2.86\text{ mm}, \quad 2.78\text{ mm}, \quad 2.84\text{ mm}, \quad 2.80\text{ mm} 2.82 mm,2.86 mm,2.78 mm,2.84 mm,2.80 mmWhat is the absolute uncertainty in the thickness of this sheet?
0.02 mm0.02\text{ mm}0.02 mm
0.04 mm0.04\text{ mm}0.04 mm
0.08 mm0.08\text{ mm}0.08 mm
0.10 mm0.10\text{ mm}0.10 mm
