reliability, validity, accuracy help (1 Viewer)

[ki7a]

reliability, validity, accuracy

 

[Naylyn]

This is how I think about it.

Reliable results are those that can be replicated by someone else using your methods.
Valid results are those that fit what you are trying to find.
Accurate results are those that have very little error implicit in them, usually accurate results are those that are close to the accepted value.

 

[alcalder]

The way to make results:

- reliable: Take several results, at least three. Discard those that are a long way away from the others and do more results so you get at least 3 that are closer together.

- valid: Use a control and control your variables. Keep all but one thing constant and then take your measurements.

- accurate: Identify and minimise possible sources of error. Recognise uncertainty in measurement (ie when you measure with a ruler that has markings to 1mm, the error of measurement will be + or - 0.5mm)

For more information:

http://webs.mn.catholic.edu.au/physics/emery/accuracy.htm


Hope that helps.