| Date | November 2013 | Marks available | 1 | Reference code | 13N.1.SL.TZ0.1 |
| Level | Standard level | Paper | Paper 1 | Time zone | Time zone 0 |
| Command term | Question number | 1 | Adapted from | N/A |
Question
The sides of a square are measured to be 5.0 ± 0.2 cm. Which of the following gives the area of the square and its uncertainty?
A. 25.0 ± 0.2 cm2
B. 25.0 ± 0.4 cm2
C. 25 ± 2 cm2
D. 25 ± 4 cm2
Markscheme
C
Examiners report
A number of candidates opted for B. Candidates appeared to have added the absolute uncertainty rather than adding the relative uncertainty as the approximation for finding the uncertainty in multiplication.
Syllabus sections
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