A strong evidence base to support your findings and judgements is an essential part of a robust self-evaluation. You need to be clear about why you think something is good or bad, working well or could be improved. It is always beneficial to draw evidence from more than one source to ensure that your conclusions are reliable, applicable and valid.
There are two types of evidence: qualitative and quantative
Qualitative evidence consists of observations, quotations, opinions and reactions from appropriate sources (both inside and outside your organisation) that inform your conclusions. Examples include:
Quantitative evidence is the combination of facts and figures that inform your conclusions. Examples include: