Question

Measurement made in science lab must be as accurate as possible. Ravi measured the length of an iron rod and said it was 19.34 cm long; Kamal said 19.25 cm; and Tabish said 19.27 cm. The correct length was 19.33 cm. How much of error was made by each of the boys?

Answer 1

The actual length of an iron rod = 19.33 cm

Measured Ravi = 19.34 cm

Error = Measured value – Actual value

= (19.34 – 19.33) cm = +0.01 cm

Kamal measured = 19.25 cm

Error = (19.25 – 19.33) cm = –0.08 cm

Tabish measured = 19.27 cm

Error = (19.27 – 19.33) cm = –0.06 cm