Question

20 POINTS HURRY! What is the margin of error for an estimate taken from the graduated cylinder below?

A. 1 ml
B. 0.5 ml
C. 0.1 ml
D. 0.05 ml
Extra points for the correct and first answer.

Answer 1

A 1 mL

Explanation:

The marks on the cylinder each represent 2 mL. The general assumption for using a device like this for measurement is that the value can be correctly rounded to the nearest mark. That is, the error will not exceed half the distance between marks:

1/2 × 2 mL = 1 mL . . . . possible error in the reading