Errors

What errors occur in measurements of temperature due to poor thermal contact between the thermometer and the substance whose temperature is to be found?

• Systematic errors

• Random errors

• Both systematic and random errors

• Neither systematic nor random errors

A measurement result is considered ________ if it is judged to be close to the true value. It is influenced by random and systematic errors.

• Precise

• Accurate

• An error

• Resolution

Accuracy means

• the measurements are close to each other

• the measurement is close to the true value

• the measurements are close to each other

• the measurements are close to each other and the true value.

When a measurement is repeatable and consistent it is said to have...

• High precision
• Low precision
• High accuracy
• Low accuracy

Which of the following tools will provide the most accurate measurement of the mass of a small object?

• 
• 
• 
• 

The relative error expressed as a percentage is called ______

• Absolute error

• Mean error

• Average error

• Percentage error

Random error is also called as ________

• Relative error

• Chance error

• Technique error

• Local error

Formula for Relative error is __________

• Δa_{m =} a_m

• Δa_{m +} a_m

• Δa_{m X} a_m

• Δa_m / a_m

9. __________ error is caused by the carelessness of observer.

• Random error

• Systematic error

• Gross error

• All the above

10. The uncertainty in a measurement is called error.

• true

• false