<prompt> Translate the following text to EnglishMbinu za kutathmini kuegemea kwa uchunguzi, mbinu za kubadilisha kiasi kikubwa sana cha data ya ubora, na mbinu za kuunganisha data ya ubora au matokeo kutoka maeneo kadhaa zimetengenezwa.  <response>: Methods of assessing the reliability of observations, techniques for transforming very large amounts of qualitative data, and methods for aggregating qualitative data or findings from several sites have been developed. 