Hanyar na ilmin lissafi statistics. komawa da baya analysis

Yi amfani da da kalmar mahara komawa da baya analysis fara Pearson (Pearson) a cikin ayyukansu, dating daga shekara 1908 tukuna. Ya bayyana shi a matsayin wani misali na wakili gudanar da sayar da dukiya. A cikin bayanin kula a kan gidajen Ciniki Specialist jagoranci lissafi na da fadi da kewayon tushen bayanan kowane mutum tsari. By sakamakon cinikai shi kayyade wadda factor da mafi girma da tasiri a kan farashin da ma'amala.

Analysis na babban yawan ma'amaloli ba ban sha'awa sakamakon. A karshe kudin rinjayi mutane da yawa dalilai, wani lokacin kai ga paradoxical karshe kuma ko da hujjõji "watsi", a lokacin da gidan da wani babban farko yuwuwar sayar a rage farashin index.

A na biyu misali na aikace-aikace na wannan bincike ne da aka ba aikin gwani ma'aikata, wanda aka wakkala kayyade ma'aikaci amfanin. The kalubale sa a gaskiyar cewa bukata rarraba ba tsayayyen adadin ga kowane, da kuma tsananin riko da kyawawan dabi'unsa da takamaiman aikin yi. Ana zargin wani iri-iri ayyuka da cewa su ne kusan kama da bambance-bambancen mafita, ya bukatar wani karin cikakken nazari a ilmin lissafi matakin.

A ilmin lissafi statistics, wani gagarumin wurin da aka bai wa wani "komawa da baya analysis" sashe, akwai sõyayya m dabaru amfani ga karatu da dependencies rufe da manufar komawa da baya. Wadannan dangantaka ne kiyaye tsakanin data samu a cikin ilimin kididdiga da ƙididdiga.

Komawa da baya analysis ayyuka a cikin jam'i na babban yana da uku dalilai: domin ayyana da komawa da baya lissafi na janar form. yi na siga kiyasta cewa suna unknown, da suke kunshe a cikin komawa da baya lissafi. dubawa komawa da baya ilimin kididdiga shiriritar. A cikin shakka daga nazarin dangantaka da ya auku tsakanin wata biyu daga dabi'u sakamakon gwaji lura da yawan aka gyara (da yawa) rubuta (x1, y1), ..., (xn, yn), dangane da matsayin da komawa da baya ka'idar da bayar da shawarar cewa for guda darajar Y akwai wani yiwuwa rarraba, duk da cewa wani X zauna ajali.

A sakamakon Y dogara da darajar da m X, wannan dogaro za a iya ƙaddara da daban-daban dokokin, daidaito da sakamakon da aka rinjayi da yanayi da kuma manufar da bincike na lura. A gwaji model dogara ne a kan wasu zaton waɗanda suke Saukake amma plausible. Babban yanayin ne cewa, darajar siga X ne sarrafawa. Its dabi'u suna ba kafin a soma gwaji.

Idan a cikin shakka daga cikin gwaji, da biyu daga wanda ba a iya lura da shi ba canji da XY, da komawa da baya analysis za'ayi da wannan hanyar, amma ga fassarar da sakamakon, a cikin abin da muke nazarin dangane nazari na bazuwar canji, amfani da hanyoyin da hulda analysis. Ilimin kididdiga hanyoyin ba su da wani m batu. Sun sami aikace-aikace a cikin rayuwar a fannoni daban daban na mutum aiki.

A kimiyya adabi domin sanin aka ambata a sama Hanyar ya sami fadi da yin amfani da kalma mikakke komawa da baya analysis. Ga wani m X amfani da kalmar regressor ko ashen da kuma dogara da canji Y-ma kira criterial. Wannan terminology nuna wani ilmin lissafi dangantaka canji, amma ba investigative causal dangantaka.

Komawa da baya analysis ne ya fi kowa Hanyar da aka yi amfani a cikin aiki da sakamakon da fadi da dama na lura. Jiki da kuma nazarin halittu aiki karatu ta hanyar wannan hanya, shi ne a aiwatar da tattalin arziki, da kuma a cikin art. Mass sauran yankunan amfani da komawa da baya analysis model. Analysis na sãɓã wa jũna, zane na gwaje-gwajen, ilimin kididdiga da bincike na hadaddiyar aiki kafada da kafada da wannan hanya na koyo.