Miley Cyrus

Measurement Uncertainty?

how do i work out the uncertainty of the graph ive plotted voltage vs current ?
ive only taken 1 reading for each one.. this was done using a digital multimeter

(Current +) (Current -) (Voltage +)(Voltage -)
0 0 0 0
0.55 -0.55 0.70 -0.70
1.57 -1.57 1.60 -1.60
2.58 -2.58 2.70 -2.70
3.62 -3.62 3.60 -3.60
4.63 -4.63 4.60 -4.60
5.52 -5.52 5.60 -5.60
5.64 -5.64 6.70 -6.70
7.63 -7.63 7.60 -7.60
8.61 -8.61 8.60 -8.60
9.56 -9.56 9.60 -9.60

someone point me to the right direction please!! thanks alot in advance

p.s sorry about the table i know it looks a mess but i cant copy the grid on here it comes out like this