Raws li cov ntsiab lus-biserial, suav Pearson correlation rau ob qhov sib txawv dichotomous yog qhov same as the phi. Zoo ib yam li t-test/correlation equivalence, kev sib raug zoo ntawm ob dichotomous variables yog tib yam li qhov sib txawv ntawm ob pawg thaum lub dependent variable yog dichotmous.
Koj puas tuaj yeem ua kev sib raug zoo nrog cov sib txawv dichotomous?
Rau qhov sib txawv dichotomous categorical thiab qhov sib txawv tsis tu ncua koj tuaj yeem xam qhov Pearson kev sib raug zoo yog tias qhov sib txawv ntawm categorical muaj 0/1-coding rau pawg. Qhov kev sib raug zoo no kuj tseem hu ua point-biserial correlation coefficient.
Koj puas tuaj yeem cuam tshuam ntau dua 2 qhov sib txawv?
Peb kuj tuaj yeem xam qhov sib txheeb ntawm ntau dua ob qhov sib txawv. … Feem ntau cov subscripts raug muab tso tseg thiab ntau qhov sib txuas coefficient thiab ntau coefficient ntawm kev txiav txim siab yog sau yooj yim li R thiab R2 raws. Cov lus txhais no kuj tseem tuaj yeem nthuav dav rau ntau dua ob qho kev hloov pauv ywj pheej.
Koj puas tuaj yeem cuam tshuam ob qhov sib txawv ntawm binary?
Kev sib raug zoo ntawm Pearson thiab Spearman tau txhais ntev npaum li koj muaj qee qhov 0s thiab qee qhov 1s rau ob leeg ntawm ob qhov sib txawv binary, hais y thiab x. … Piv txwv li, nyob rau hauv txhua qhov xwm txheej uas ob lub vectors zoo ib yam, raug rau qee qhov 0s thiab qee qhov 1s hauv txhua qhov, tom qab ntawd los ntawm kev txhais y=x thiab kev sib raug zoo yuav tsum yog 1.
Koj pom qhov kev sib raug zoo ntawm ob qhov sib txawv li cas?
Txoj hauv kev los tshuaj xyuas kev sib raug zoo ntawm ob qhov sib txawv:
- Graphical: pawg kab kos duab; stacked bar chart.
- Descriptive statistics: cross tables.
- Kev ntsuas ntsuas: ntsuas qhov sib txawv ntawm qhov sib npaug. chi-square xeem ib qho kev xeem los sim yog tias ob qho kev sib txawv ntawm cov categorical yog ywj siab.
