Step 1: Identify the measured value and the true value. Here, the measured value is 20.0 and the true value is 19.5.
Step 2: Calculate the difference between the measured value and the true value. This is done by subtracting the true value from the measured value: |20.0 - 19.5|.
Step 3: Calculate the absolute value of the difference. The result is |0.5|, which is 0.5.
Step 4: Divide the absolute difference by the true value. This means you take 0.5 and divide it by 19.5: 0.5 / 19.5.
Step 5: Calculate the result of the division. This gives you approximately 0.02564.
Step 6: Multiply the result by 100 to convert it to a percentage. So, 0.02564 × 100 = 2.564.
Step 7: Round the percentage to two decimal places if needed. The final percentage error is approximately 2.56%.
