State the absolute error of a measurement of 30kg, which was measured to the nearest kilogram.
The absolute error of a measurement is the difference between the measured value and the true value. In this case, the measurement was 30kg, which was measured to the nearest kilogram.
Since the measurement was rounded to the nearest kilogram, the possible true values could be 29.5kg (rounding down) or 30.5kg (rounding up).
- If the true value is 29.5kg, then the absolute error would be 30kg - 29.5kg = 0.5kg.
- If the true value is 30.5kg, then the absolute error would be 30.5kg - 30kg = 0.5kg.
Therefore, the absolute error of the measurement of 30kg, which was measured to the nearest kilogram, is 0.5kg.