
central composit design

sthithivivarakkanakkukali, oru central composit design oru pareekshanathmaka roopakalppanayaanu, ithu prathikarana uparithala reethishaasthrathil upayogapradamaanu, oru samboornna moonnu-level factoral pareekshanam upayogikkenda aavasyamillaathe prathikarana variabilinaayi oru second oordar (quadratic) model nirmmikkunnathin.
roopakalppana cheytha pareekshanam nadatthiya sesham, phalangal labhikkunnathin rekheeya regression upayogikkunnu, chilappol aavarthichu. eee design nirmmikkumbol coded variableukal palappozhum upayogikkunnu.
nadappaakkal.
roopakalppanayil moonnu vyathyastha pareekshanathmaka runs adangiyirikkunnu
design matricks.
keey" gadakangal ulppedunna oru kendra samyojitha design pareekshanatthinulla design matricks moonnu tharam pareekshanathmaka rannukalumaayi poruthappedunna inipparayunna moonnu vyathyastha bhagangal adangiya oru maatriksil ninnaan uruthirinjathu
appol d ennathu lambamaya samyojanamaan
leanier regressionil upayogikkunna design matricks x ennathu 1s (intersept), d ennivayude oru nirayudeyum d-yude oru jodi nirakalude ellah moolaka thirichulla uthppannangaludeyum thirashcheena samyojanamaan
ivide d ("i") ennathu d-leeii "i"-aam niraye prathinidheekarikkunnu. 
α thiranjedukkuka.
α-yude upayogapradamaaya moolyam thiranjedukkaan niravadhi vyathyastha reethikalundu. factorial design kaaranam "f" pooyintukalude ennavum "t" = 2 "k" + "n", adhika pooyintukalude ennavum ayirikkatte, ivide "n" ennathu designile kendra pooyintukalude ennamaanu. pothuvaaya moolyangal inipparayunnavayaanu (myers, 1971):
optimaiseshanaayi kendra samyojitha designukalude prayogam.
pravartthana gadakangal opttimais cheythukondu oru prathyeka padaarthatthinte uthpaadanam paramavadhi vardhippikkunnathinu prathikarana uparithala reethishaasthram polulla sthithivivarakkanakku sameepanagal upayogikkaam. parambaraagatha reethikalil ninnu vyathyasthamayi, prosess variableukal thammilulla edapedal stattistikkal teknikkukal upayogichu nirnnayikkaan kazhiyum. udaaharanathinu, oru padanatthil, thaapanila, samayam, ethanol saandrata ennivayulppede arrie vaikkol organosolve pretreatmentinte nirnaayaka gadakangalude prabhavam anweshikkaan oru kendra samyuktha roopakalppana upayogichu. sheshikkunna khara, lignin veendedukkal, hydrajan vilavu enniva prathikarana veriyabilukalaayi thiranjedutthu.
paraamarshangal.
myers, reymond echu. "prathikarana uparithala reethishaasthram". bosttan alleen aandu bekkan, ink.1971

