Question

To calculate his height more accurately, Roshan has taken the measurement thrice. The measurements he recorded are 140.0 cm, 141.5 cm and 141.0 cm. What will be the most accurate value of his height among the following options?

• A. 140.0 cm
• B. 140.3 cm
• C. 141.5 cm
• D. 140.8 cm

Answer 1

The correct option is D 140.8 cm

To increase accuracy we can take multiple measurements and calculate the average of the recorded measurements.
The recorded measurements here are 40.0 cm, 141.5 cm and 141.0 cm.

So, the average will be = (140.0 + 141.5 + 141.0)/3 = 140.8 cm.

Hence, among the given options the most accurate value will be 140.8 cm