Pr (>-t -) txhais li cas?

2024 Tus sau: Stanley Ellington | [email protected]. Kawg hloov kho: 2023-12-16 00:17

l. Pr (| T | > | t|) - Qhov no yog ob-tailed p-tus nqi ntsuas qhov null tawm tsam lwm txoj kev uas tus txhais yog tsis sib npaug 50. Nws yog sib npaug ntawm qhov tshwm sim ntawm kev soj ntsuam tus nqi ntau dua ntawm t nyob rau hauv lub null hypothesis. Yog p-tus nqi yog tsawg dua li qib alpha ua ntej (feem ntau yog. 05 lossis.

Kuj nug, Pr (>| t |) txhais li cas?

Pr (>| t|) muab koj p-tus nqi rau qhov ntawd t -test (qhov kev faib ua feem ntawm cov t kev faib tawm ntawm qhov df uas ntau dua tus nqi ntawm koj t statistic).

Tsis tas li ntawd, tus nqi P txhais li cas hauv regression? Cov p - tus nqi rau txhua lub sij hawm sim cov null hypothesis tias cov coefficient yog sib npaug rau xoom (tsis muaj txiaj ntsig). Ib qho qis p - tus nqi (< 0.05) qhia tias koj tuaj yeem tsis lees paub qhov kev xav tsis tseeb. Feem ntau, koj siv cov coefficient p - tus nqi los txiav txim seb cov nqe lus twg yuav khaws cia rau hauv regression qauv

Qhov thib ob, PR txhais li cas hauv R?

Cov Pr (> t ) acronym pom nyob rau hauv cov qauv tso zis muaj feem xyuam rau qhov tshwm sim ntawm kev soj ntsuam cov nqi sib npaug lossis loj dua t . Ib qho me me p-tus nqi qhia tias nws tsis zoo li peb yuav soj ntsuam kev sib raug zoo ntawm tus kwv yees (ceev) thiab cov lus teb (dist) hloov pauv vim muaj caij nyoog.

T test yog siv rau dab tsi?

A t - xeem yog hom inferential statistic siv rau txiav txim siab seb puas muaj qhov sib txawv tseem ceeb ntawm txoj kev ntawm ob pawg, uas tej zaum yuav muaj feem cuam tshuam nrog qee yam nta. A t - xeem yog siv li ib hypothesis kuaj cuab tam, uas tso cai kuaj ntawm ib qho kev xav muaj feem xyuam rau cov pej xeem.