Video: Puas yog Alpha 1 rho tawm Alpha Beta?
2024 Tus sau: Stanley Ellington | [email protected]. Kawg hloov kho: 2023-12-16 00:17
Nws yuav tsum tau muab sau tseg tias α ( alpha ) qee zaum hu ua kev ntseeg siab ntawm qhov kev xeem, lossis qib ntawm qhov tseem ceeb (LOS) ntawm qhov kev xeem. Rau hom II yuam kev, nws yog qhia raws li β ( beta ) thiab yog 1 tus lej lub zog los yog 1 nqe qhov rhiab heev ntawm qhov kev xeem.
Ntawm no, Alpha yog dab tsi nyob rau hauv regression?
Alpha , qhov kev cuam tshuam ntsug, qhia koj ntau npaum li cas cov nyiaj tau zoo dua li CAPM kwv yees (lossis tej zaum ntau dua, qhov tsis zoo alpha qhia koj tias nws tau ua phem npaum li cas, tej zaum yog vim cov nqi tswj hwm siab). Qhov zoo ntawm qhov haum yog muab los ntawm tus lej r-squared.
Tsis tas li ntawd, alpha thiab beta yog dab tsi hauv kev txheeb cais? α ( Alpha ) yog qhov yuav tshwm sim ntawm Hom I yuam kev hauv ib qho kev ntsuam xyuas kev xav - tsis raug lees paub qhov kev xav tsis tseeb. β ( Beta ) yog qhov tshwm sim ntawm Hom II yuam kev hauv ib qho kev ntsuas kev xav - tsis raug tsis lees paub qhov kev xav tsis tseeb. (1 - β yog lub zog).
Hauv qhov no, puas yog alpha thiab beta inversely cuam tshuam?
Alpha qib thiab beta qib yog muaj feem xyuam : Ib alpha theem yog qhov tshwm sim ntawm hom I yuam kev, lossis tsis lees txais qhov kev xav tsis zoo thaum nws muaj tseeb. A beta qib, feem ntau tsuas yog hu ua beta (β), yog qhov sib txawv; qhov tshwm sim ntawm kev lees txais qhov null hypothesis thaum nws tsis tseeb.
Alpha Beta formula yog dab tsi?
Cov ntsiab lus. Qhov sib npaug ntawm cov hauv paus hniav α thiab β ntawm lub quadratic sib npaug yog: α + β = −b a displaystyle alpha + beta =-frac{b}{{a}} α +β=-ab. Cov khoom ntawm cov hauv paus hniav α thiab β yog muab los ntawm: α β = c ib displaystyle tus tsiaj ntawv =frac{c}{{a}} α ab = ac.
Pom zoo:
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