<prompt> Translate the following text to EnglishMfano wa utafiti wa hali ya juu ni pamoja na utafiti wa hali ya juu, na ni njia ya kuamua usahihi wa habari kwa kulinganisha aina tatu au zaidi ya maoni huru juu ya vyanzo vya data kwa mfano, mahojiano, uchunguzi, na nyaraka, uchunguzi tofauti, nyakati tofauti zinazohusiana na matokeo sawa.  <response>: The combination of methodologies in the study of the same phenomenon or construct; a method of establishing the accuracy of information by comparing three or more types of independent points of view on data sources for example, interviews, observation, and documentation; different investigations; different times bearing on the same findings. 