Dt nlyss s th prcss f nspctng, clnsng, trnsfrmng, nd mdlng dt wth th gl f dscvrng sfl nfrmtn, nfrmng cnclsns, nd spprtng dcsn-mkng. Dt nlyss hs mltpl fcts nd pprchs, ncmpssng dvrs tchnqs ndr vrty f nms, nd s sd n dffrnt bsnss, scnc, nd scl scnc dmns. n tdy's bsnss wrld, dt nlyss plys rl n mkng dcsns mr scntfc nd hlpng bsnsss prt mr ffctvly.
Dt mnng s prtclr dt nlyss tchnq tht fcss n sttstcl mdlng nd knwldg dscvry fr prdctv rthr thn prly dscrptv prpss, whl bsnss ntllgnc cvrs dt nlyss tht rls hvly n ggrgtn, fcsng mnly n bsnss nfrmtn. n sttstcl pplctns, dt nlyss cn b dvdd nt dscrptv sttstcs, xplrtry dt nlyss (D), nd cnfrmtry dt nlyss (CD). D fcss n dscvrng nw ftrs n th dt whl CD fcss n cnfrmng r flsfyng xstng hypthss. Prdctv nlytcs fcss n th pplctn f sttstcl mdls fr prdctv frcstng r clssfctn, whl txt nlytcs ppls sttstcl, lngstc, nd strctrl tchnqs t xtrct nd clssfy nfrmtn frm txtl srcs, spcs f nstrctrd dt. ll f th bv r vrts f dt nlyss.
Dt ntgrtn s prcrsr t dt nlyss, nd dt nlyss s clsly lnkd t dt vslztn nd dt dssmntn.