Question

Two students (X and Y) measured the diameter of a gold coin four

Answer 1

Explanation:

To solve this problem, we need to understand the concept of precision and accuracy.

Through this understanding we apply to solve this problem.

• Precision is the ability to reproduce the same set of values in an experiment.
• Accuracy is the nearness or closeness of the measured value to the true value.

For example; if the true value is 28.0mm and the following readings were made:

        A  =  24.0mm, 24.0mm, 24.3mm, 23.9mm  This is a precise measurement but not accurate.

      B  =  27.9mm, 28.0mm, 28.1mm:  This is an accurate measurement because it is close to the true value.