Qhov nruab nrab yog ua yuam kev thaum siv los sib piv cov pab pawg sib txawv, siv pab pawg neeg coj cwj pwm rau ib tus neeg qhov xwm txheej, lossis thaum muaj ntau qhov sib txawv hauv cov ntaub ntawv. Cov hauv paus ntsiab lus ntawm cov teeb meem no tshwm sim dhau qhov yooj yim thiab kev sib cav sib ceg - dab tsi tib neeg xav ntseeg.
Puas yog nruab nrab?
Tsis muaj leej twg ua tau zoo ntawm txhua yam lawv ua, qhov tseeb - txhua tus ua tau zoo ntawm ob peb yam uas lawv ua, thiab qhov nruab nrab qhov nruab nrab ntawm lwm yam. Qhov uas yuav tsum nco ntsoov txawm li cas los xij, yog qhov nruab nrab tsis yog ib yam uas peb yuav tsum tsom rau. Nruab nrab raws li lub hom phiaj tsis zoo. Average as result is okay.
Vim li cas qhov nruab nrab tsis yog qhov ntsuas zoo?
Kev piav qhia: Qhov txhais tau tias tsis yog qhov ntsuas zoo ntawm lub hauv paus kev nyiam vim nws yuav siv rau hauv tus account txhua cov ntaub ntawv taw qhia. Yog hais tias koj muaj outliers zoo li nyob rau hauv ib tug skewed tis, ces cov outliers cuam tshuam qhov txhais tau tias ib tug tib outlier yuav luag lub ntsiab lus los yog nce. Qhov no yog vim li cas lub ntsiab lus tsis yog ib qho kev ntsuas zoo ntawm lub hauv paus nyiam.
Vim li cas qhov nruab nrab ntawm qhov nruab nrab tsis yog?
Nws tsuas yog muaj tseeb yog tias tag nrho ntawm qhov nruab nrab suav nrog cov teeb tsa uas muaj tib daim cardinality, txwv tsis pub nws yog cuav. Hauv cov ntsiab lus zoo nkauj, qhov nruab nrab tsis faib txawm tias nws yog algebraic. Qhov tshwm sim no muaj lub npe: qhov tseeb tias qhov nruab nrab ntawm qhov nruab nrab tsis yog qhov nruab nrab yog ib qho piv txwv ntawm Simpson's Paradox.
Puas qhov nruab nrab yog qhov zoo?
Txoj kev ntseeg nrov, muajntau qhov zoo rau kev ua, thiab txawm tias muaj kev xav, nruab nrab. Yog tias koj xav kom zam dhau qhov mob ntawm lub cev thiab lub siab lub ntsws, yog qhov nruab nrab yog ib qho ntawm koj cov kev xaiv zoo tshaj; pathology feem ntau cuam tshuam nrog kev txheeb xyuas qhov tsis sib xws.
