<prompt> Translate the following text to SwahiliFor case studies in particular, there must be an empirical basis for instance selection and assurance of adequate population homogeneity.  <response>: Kwa ajili ya masomo ya kesi hasa, lazima kuwe na msingi wa majaribio kwa ajili ya mfano uteuzi na uhakika wa homogeneity ya kutosha ya idadi ya watu. 