Alength is quoted as 2.0mm. what is the absolute uncertainty implied by this number?

If the uncertainty associated with a value is not specified , It is assumed to be +- 1 in final digit. so absolute uncertainty implied by this number is +- 0.1mm

(2.0mm +- 0.1 mm )

given length = 2.0mm

scale is divided by one unit = 0.1 mm

uncertainty is measure  = +- 0.1

value become ( 2.0 +- 0.1)

              ( 3 , 1.9)

here is table 2-2:

country

percent of eligible voters that voted

rank

united states

44.9%

138

canada

60.1%

107

costa rica

84.6%

14

hungary

66.9%

82

japan

57.0%

118

egypt

27.7%

159

south africa

85.5%

10

ans is no, the data set cannot be plotted as a single circle graph