Precision Accuracy and Reliability Flashcards
(10 cards)
What is precision in an experiment?
The consistency of repeated measurements.
What is accuracy?
How close a measurement is to the true value.
What does reliability mean in experiments?
The ability to get similar results upon repetition.
How can precision be improved?
By using better instruments and reducing human errors.
What is a systematic error?
An error that occurs consistently in the same direction, affecting accuracy.
What is a random error?
An error that varies unpredictably, affecting precision.
What instrument increases measurement accuracy?
Digital instruments (e.g., digital balance, Vernier calipers).
How do you improve reliability?
By repeating experiments multiple times.
What is the difference between precision and accuracy?
Precision is about consistency, accuracy is about correctness.
Why does using a ruler with finer divisions increase precision?
It reduces the margin of error in measurements.
