Experimental Definitions

Question 1

Accuracy

Answer 1

How close an experimental result is to its true value
Accuracy usually depends on the method you use to obtain your results

Question 2

Reliability

Answer 2

If you carry out several repeats and your results are similar, you can be confident that your results are reliable.
By identifying anomalies and removing them and calculating a mean you increase the reliability of your results

Question 3

Precision

Answer 3

The smallest unit on the scale of measuring instruments you are using.
If you measure something very precisely you measure using the smallest unit possible

Question 4

Validity

Answer 4

If the method makes sure that the effects observed and measured are due to the cause claimed