<prompt> Translate the following text to SwahiliSite selection cannot be convenience because usually generalization wanted, and purposive sample can be typical and representative of diversity and best and worst cases; number of cases depends on program diversity since generalization usually wanted; data rely on common instruments, published documents, and observation; reports are varied in theme, site, chronology, and narration  <response>: Uchaguzi wa tovuti hauwezi kuwa urahisi kwa sababu kawaida generalization inataka, na sampuli ya kusudi inaweza kuwa ya kawaida na mwakilishi wa utofauti na bora na mbaya zaidi kesi; idadi ya kesi inategemea program utofauti tangu generalization kawaida alitaka; data kutegemea vyombo vya kawaida, kuchapishwa hati, na uchunguzi; ripoti ni tofauti katika mandhari, tovuti, chronology, na narration. 