Qhov tseem ceeb feem ntau yog txhais los ntawm a p-tus nqi, lossis tus nqi tshwm sim Qhov tseem ceeb ntawm tus lej yog qhov tsis txaus ntseeg - nws nyob ntawm qhov pib, lossis tus nqi alpha, xaiv los ntawm tus kws tshawb fawb. Qhov chaw pib tshaj plaws yog p < 0.05, uas txhais tau hais tias cov ntaub ntawv yuav tshwm sim tsawg dua 5% ntawm lub sijhawm raws li qhov kev xav tsis tseeb.
Koj ua li cas txiav txim siab qhov tseem ceeb ntawm kev xeem ntsuas?
Pib los ntawm saib sab laug ntawm koj qib kev ywj pheej thiab pom koj qhov sib txawv. Tom qab ntawd, nce mus saib p-values Sib piv p-tus nqi rau qib tseem ceeb lossis theej, alpha. Nco ntsoov tias p-tus nqi tsawg dua 0.05 suav tias yog qhov tseem ceeb.
Koj qhia li cas p-tus nqi tseem ceeb?
P tus nqi yuav tsum qhia li cas?
- P yog ib txwm italicized thiab capitalized.
- Tsis txhob siv 0 ua ntej tus lej lej rau cov txiaj ntsig P, alpha, thiab beta vim lawv tsis tuaj yeem sib npaug 1, ua lwm yam lus, sau P<.001 es tsis txhob P<0.001.
- Tus nqi tiag tiagyuav tsum tau qhia (P=.
Yuav ua li cas rau qhov chi square qhov tseem ceeb ntawm p 0.05 qhia?
P tus nqi tseem ceeb rau chi squared yog dab tsi? Qhov zoo li chi-square txheeb cais yog 11.816 thiab p-tus nqi=0.019. Yog li ntawd, ntawm qhov tseem ceeb ntawm 0.05, koj tuaj yeem txiav txim siab tias kev koom tes ntawm qhov sib txawv yog qhov tseem ceeb.
Puas yog tus nqi ntau dua 1?
Kev piav qhia: P-tus nqi qhia koj qhov tshwm sim ntawm qhov tshwm sim uas sib npaug lossis ntau dua qhov koj tau ua tiav raws li koj qhov kev xav tshwj xeeb. Nws yog qhov tshwm sim thiab, raws li qhov tshwm sim, nws nyob ntawm 0-1.0 thiab tsis tuaj yeem tshaj ib.
