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Measurement, accuracy and precision
Lower Sec Science · Secondary 1 · Hard · Measurement, accuracy and precision
A student measures the length of a metal rod as 15.0 cm using a ruler. The actual length is 15.2 cm. Which statement about the ruler is most likely true?
(Concept: measurement accuracy and precision.)
(Concept: measurement accuracy and precision.)
- The ruler gives readings that are close to the true value, so it is fairly accurate.
- The ruler is precise but not accurate because the reading is far from the true value.
- The ruler is neither accurate nor precise because only one reading was taken.
- The ruler is perfectly accurate because the reading matches the true value exactly.
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