Question

Four students measure the height of a tower. Each student uses different methods and each measures the height many times. The data for each are plotted. The measurement with the highest precision is:

• A. I
• B. II
• C. III
• D. IV

Answer 1

The correct option is A I

Precision refers to the closeness of measurements to each other, while accuracy refers to closeness of measurements to a known value.

In the 4 different measurements, the data in figure (I) are close to each other compared to (II), (III) and (IV).

Thus, the measurements with highest precision are made in (I)