Fisher qhov kev ntsuas tseeb yog qhov ntsuas qhov tseem ceeb hauv kev tshuaj xyuas cov rooj sib tham. Txawm hais tias nyob rau hauv kev xyaum nws yog ua hauj lwm thaum tus qauv loj me me, nws siv tau rau txhua qhov ntau thiab tsawg.
Puas yog Fisher qhov kev xeem tsuas yog rau 2x2?
Qhov teeb meem nkaus xwb nrog kev thov Fisher qhov tseeb rau cov ntxhuav loj dua 2x2 yog qhov cov kev suav ua nyuaj dua.
Raws li qhov twg ntawm cov xwm txheej hauv qab no koj xav tau siv Fisher qhov kev xeem tiag tiag es tsis yog qhov ntsuas chi-square?
Raws li qhov twg ntawm cov xwm txheej hauv qab no koj yuav tsum tau siv Fisher qhov tseeb tsis yog qhov kev xeem chi-square? Tus Fisher qhov tseeb qhov kev xeem yog siv thaum ib lossis ntau dua qhov xav tau ntawm tes suav hauv tus ntoo khaub lig-tabulation tsawg dua 5. Thaum cov pab pawg tsis muaj kev ywj pheej (xaiv C), McNemar qhov kev sim yog siv.
Fisher qhov kev ntsuas tseeb xav li cas?
B ntawm probability of death, a 2×2 contengency table test assume that every subject on treatment A muaj qhov tshwm sim ntawm kev tuag tib yam.
Puas yog Fisher qhov kev kuaj xyuas tseeb heev?
Nyob rau hauv cov ntsiab lus ntawm tus qauv no, Fisher's qhov kev ntsuas tseeb yog kev saib xyuas. P-tus nqi yog li peb zaug loj dhau. Exhaustive kev tshawb fawb (piv txwv li, los ntawm D'Agostino li al. 1988) tau lees paub qhov kev txiav txim siab no hla ntau pawg ntau thiab tsawg ntawm 0.
