Measurement of Errors

What is an absolute error?

• The percentage difference between measured and true values

• The difference between the measured and actual value

• The average of measured values

• A relative measure of accuracy

Which error is caused by human mistakes?

• Random error

• Environmental error

• Systematic error

• Instrumental error

If the measured value is 19.8A and the true value is 20A, what is the absolute error?

• 0.002A

• 0.002A

• 0.02A

• 0.2A

What is the percentage error if the absolute error is 1 and the true value is 10?

• 0.1%

• 1%

• 10%

• 100%

What is the main cause of systematic error?

• Random occurrences

• Misuse of instruments

• External environmental conditions

• Unpredictable events