How Close Was the Measurement?: Key Details

How do you calculate percent error?

• A.Add the true value to the measured value, then divide by 100.
• B.Multiply the measured value by the true value, then subtract 100.
• C.Subtract the true value from the measured value, divide by the true value, then multiply by 100.

If the measured length of a pencil is 15 cm and the actual length is 14 cm, what is the percent error?

• A.7.14%
• B.1%
• C.15%