What is the percentage error if the measured value is 20 and the true value is 2

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Question: What is the percentage error if the measured value is 20 and the true value is 25? (2021)

Options:

Correct Answer: 10%

Exam Year: 2021

Solution:

Percentage error is calculated as (|True Value - Measured Value| / True Value) * 100 = (|25 - 20| / 25) * 100 = 20%.

What is the percentage error if the measured value is 20 and the true value is 25? (2021)

What is the percentage error if the measured value is 20 and the true value is 25? (2021)

Step 1: Identify the measured value and the true value. Here, the measured value is 20 and the true value is 25.
Step 2: Subtract the measured value from the true value to find the difference. Calculate |25 - 20| which equals 5.
Step 3: Divide the difference by the true value. So, calculate 5 / 25.
Step 4: Multiply the result from Step 3 by 100 to convert it to a percentage. So, (5 / 25) * 100 equals 20.
Step 5: The final answer is the percentage error, which is 20%.

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