Nhamba muTsvagiridzo Tsika Tsika dzetsvagiridzo dzinowanzo kurukurwa munyaya yekubvumidzwa kwevatori vechikamu, kuvanzika kwedata, uye kuvimbika kwemuongorori. Zvisinei, chimwe chinhu chinowanzo furatirwa pasinei nebasa rayo guru mukuona kunaka uye kururamisira kwemhedzisiro yekutsvagisa inhamba. Nhamba haisi chishandiso che "kupwanya nhamba," asi panzvimbo pezvo hwaro hwepfungwa dzesainzi dzinobatsira vaongorori kuwana mhedziso dzine mutoro. Kana... Read more
Nzira yeJackknife muStatistics Nzira yejackknife inzira yakakosha yekuenzanisazve muhuwandu, kunyanya pakuyera kusava nechokwadi kwefungidziro. Jackknife inowanzo shandiswa kufungidzira kusarurama uye kusiyana kwemuongorori, pamwe nekugadzira zviyero zvekururama senge standard error. Iyi nzira iri nyore, haidi fungidziro dzakaoma dzekugovera, … Read more
Kushandiswa kweStatistics muLogistics Logistics ndiyo nzira huru yebhizinesi remazuva ano. Kubva kuvagadziri nevatengesi kusvika kumakambani e-commerce, munhu wese anovimba nekukwanisa kufambisa zvinhu neruzivo nenguva, zvisingadhuri, uye zvakavimbika. Seri kwesarudzo yega yega yelogistics—yakadai sekuti ingani stock inofanira kuchengetwa, nzira yekushandisa, kana kuti nguva yekutumira—pane… Read more
Maitiro Ekuongorora Ruzivo Rweboka Ruzivo rweboka ndeimwe yemhando dzeruzivo dzinowanikwa muongororo, bhizinesi, kushambadzira, hutano, dzidzo, uye kunyangwe ongororo dzekugutsikana kwevatengi. Kusiyana neruzivo rwenhamba (semuenzaniso, zera, kureba, mari), iyo inogona kuverengerwa uchishandisa avhareji kana standard deviation, ruzivo rweboka rune mazita kana mapoka akadai sekuti "Murume/Mukadzi," "Ndinobvumirana/Handibvumirani," "A/B/C," kana "Ndakagutsikana/Handina Kwandinoenda/Handina Kugutsikana." … Read more
Nhamba dzeKugadzira Zvinhu Zvitsva dzinowanzo fungidzirwa sepfungwa yakajeka: chinhu chitsva chinongoerekana chaonekwa uye chinochinja mararamiro evanhu. Asi mukuita, zvinhu zvitsva zvinogara kwenguva refu uye zvine simba hazviwanzo bva mukunzwisisa chete. Zvinokura kubva mukuita kwakarongeka: kunzwisisa dambudziko, kuyedza fungidziro, kudzidza maitiro emushandisi, kuongorora mashandiro, uye kunatsa sarudzo zvichibva pauchapupu. Apa ndipo… Read more
Chii chinonzi Outlier muStatistics? Mustatistics, data ndiyo inonyanya kukosha pakunzwisisa zviitiko: maitiro evatengi, mhedzisiro yebvunzo, hutano hwevarwere, mhando yekugadzirwa, uye kunyange mafambiro ehupfumi. Zvisinei, haasi ese mapoinzi edata "anoita" seakawanda. Dzimwe nguva tinosangana nepfungwa imwe kana kupfuura dzinoita sedzakasiyana zvakanyanya nedzimwe data. Outlier… Read more
Nhamba muSainzi yeMishonga Nhamba dzinoita basa rakakosha musainzi yemishonga nekuti dzinobatsira vaongorori nevanorapa kuita sarudzo dzinoenderana nedata, kwete kungonzwa chete. Kubva mukugadzirwa kwemishonga, kugadzirwa, uye kutarisirwa kwemishonga, maitiro akasiyana-siyana anoda kuongororwa kunoyerwa: kuti mushonga unoshanda sei, wakachengeteka sei kuvarwere, kuti mhando yechigadzirwa inochengetwa sei, uye kuti zvinhu zvipi zvinopesvedzera kubudirira... Read more
Zviyero zveCentral Tendency Kuyera central tendency ndeimwe yepfungwa dzakakosha uye dzakakosha muhuwandu. Chinangwa chayo chiri nyore: kupfupisa seti yedata kuita kukosha kumwe chete "kunomiririra" pakati pedata. Nemamwe mashoko, central tendency inotibatsira kupindura mibvunzo yakaita sekuti: "Ndeipi typical value?", "Inhamba ipi iyo data iyi inowanzowira pasi?", kana kuti "Ndeipi avhareji iri pedyo?" … Read more
Kuongorora Kupona muStatistics Kuongorora kupona ibazi rezviverengero rinotarisa pakuita modeling nekuongorora nguva kusvika chiitiko chaitika. Chiitiko ichi chingave kufa kwemurwere, kudzoka kwechirwere, kutadza kwezvikamu zvemuchina, kudzingwa kwevatengi, kana nguva kusvika munhu ari kutsvaga basa awana basa. Kusiyana kukuru kwekuongorora kupona kana tichienzanisa nedzimwe nzira dzezviverengero kuri mu... Read more
Pfungwa Dzekutanga dzeZvinhu Zvisingatarisirwi Muhuwandu hwezviverengero uye dzidziso yezviitiko zvingangoitika, zvinhu zvisingatarisirwi ndeimwe yepfungwa dzakakosha, ichivhara musiyano uripo pakati pezviitiko zvisingatarisirwi uye ongororo yemasvomhu inoyerwa. Kuburikidza nezvinhu zvisingatarisirwi, tinogona "kushandura" mhedzisiro yekuedza kusina kurongwa—inotanga nezviitiko kana mapoka—kuita nhamba dzinogona kugadziriswa: kuverenga mikana yadzo, kuipfupikisa neavhareji, kuyera... Read more