Answer :
Final answer:
The relative error of the measurement can be calculated using the difference between the measured and true values. The correct relative error for the weight measurement is 2.92%. Therefore, the correct answer is Option A) 2.92%.
Explanation:
Rounding Error:
- The relative error is calculated by taking the absolute difference between the measured value and the true value, then dividing by the true value.
- Given the weight measured as 152.5 pounds on a scale when it should be 157 pounds, the relative error would be ((157 - 152.5) / 157) x 100% = 2.866%! Therefore, the correct answer choice is a) 2.92%.
Percent Error:
- Relative Error is expressed as a percentage and tells us how far our measured value is from a true value.
- It is calculated by taking the absolute value of the difference between the measured value and the true value.