Only assessments with the status ‘Completed’ and assessments for which the ‘Insights Archive’ option is used are generally included in the evaluation. In addition, you can set filter options when selecting the Insights and filter the assessments by "Organizations", "Positions", "Period" and "Scale". Depending on which filters you have set, only the assessments that meet these criteria are included in the evaluation.
You can find more information about the Insights here.