Bringing together data into an overall conclusion and judgement is important for individual evaluations and also when summarising evidence from multiple evaluations.
Decide how data will be combined in terms of the agreed evaluative criteria and standards to produce an overall judgement of merit or worth.
Decide how to find, extract and combine data from multiple evaluations to produce more general conclusions about 'what works' or 'what works for whom in what circumstances'. (This is not needed for a single evaluation).
Explain how findings from this evaluation might be more generally applied or translated to new sites and situations. (This is often useful but not always needed).