Validity, Reliability, Accuracy

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The test for VALIDITY

ACER

Aim, Control, Equipment, Range

Checking for ACCURACY (2nd hand)

Can the same information be found by other VALID sources - is it RELIABLE

To ensure RELIABILITY (2nd hand)

Check the credentials of the author, the type of publication and the date of publication

Validity

Describes how sound a process is

Reliability

How likely it is that the same results will be found by others - consistency

Assessing VALIDITY

Look at individual criteria (ACER) and give an overall assessment

What is ACCURACY impacted by?

RELIABILITY and VALIDITY

To ensure RELIABILITY (1st hand)

Repeat the experiment a number of times and remove/average outliers

Accuracy

The degree of closeness between results and what is true

Checking for ACCURACY (1st hand)

The design of the experiment (is it VALID?)

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