Video: Pmcc yog dab tsi hauv kev txheeb cais?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Pearson khoom-lub sij hawm sib txheeb coefficient ( PMCC ) yog qhov ntau ntawm -1.0 thiab 1.0 uas kwv yees lub zog ntawm kev sib raug zoo ntawm ob qhov sib txawv. Cov PMCC nyob rau hauv nws daim ntawv li ib txwm yog me ntsis cumbersome los xam.
Ua raws li qhov xav tau, Pmcc qhia dab tsi?
Lub sijhawm khoom sib txuas coefficient ( pmcc ua ) tuaj yeem siv los qhia peb tias kev sib raug zoo ntawm ob qhov sib txawv li cas. Tus nqi zoo qhia tias muaj kev sib raug zoo thiab tus nqi siab dua, qhov kev sib raug zoo dua.
Qhov thib ob, Pearson r yog dab tsi hauv kev txheeb cais? Hauv txheeb cais , cov Pearson correlation coefficient (PCC, pronounced /ˈp??rs?n/), kuj hu ua Pearson tus r , cov Pearson khoom-moment kev sib txuas coefficient (PPMCC) los yog bivariate kev sib raug zoo , yog ib qho kev ntsuas ntawm linear kev sib raug zoo ntawm ob qhov sib txawv X thiab Y.
Ib yam li ib tug yuav nug, PPMC yog dab tsi hauv kev txheeb cais?
Kev sib raug zoo ntawm pawg ntawm cov ntaub ntawv yog ib qho kev ntsuas seb lawv muaj feem cuam tshuam li cas. Qhov feem ntau ntsuas ntawm correlation nyob rau hauv cov txheeb cais yog Pearson Correlation. Lub npe tag nrho yog Pearson Product Moment Correlation ( PPMC ). Nws qhia txog kev sib raug zoo ntawm ob pawg ntawm cov ntaub ntawv.
Puas yog 0.4 Ib qho kev sib raug zoo?
Rau cov ntaub ntawv zoo li no, peb feem ntau xav txog kev sib raug zoo saum toj no 0.4 yuav tsum muaj zog ; kev sib raug zoo nruab nrab ntawm 0.2 thiab 0.4 yog nruab nrab, thiab cov qis dua 0.2 yog suav tias tsis muaj zog. Thaum peb kawm tej yam uas suav tau yooj yim dua, peb cia siab tias yuav siab dua kev sib raug zoo.
Pom zoo:
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