Dab tsi, tsis sib xws; kuj, nyob rau hauv lub xeev ntawm kev tsis sib haum xeeb. Piv txwv li, John's thiab Mary cov lus teb yog qhov sib txawv txhais tau tias lawv cov lus teb tsis pom zoo, lossis John tau sib txawv nrog nws tus poj niam txhais tau tias nws tsis pom zoo lossis sib cav nrog lawv. [Thaum ntxov 1500s
Koj siv kab lus sib txawv li cas?
Piv txwv ntawm qhov sib txawv hauv kab lus
Muaj qee qhov sib txawv ntawm qhov tshwm sim. Peb pom qhov sib txawv me ntsis ntawm qhov zoo ntawm cov qauv. Nws yuav tsum tau txais qhov sib txawv los ntxiv ib lub chaw nres tsheb rau nws lub tsev.
Puas yog variance lossis variance?
var·i·ance. 1. Lub xeev lossis qhov zoo ntawm kev hloov pauv lossis hloov pauv; variation: qhov sib txawv ntawm qhov kub thiab txias thoob plaws cheeb tsam.
Puas yog variance yog lo lus tiag?
lub xeev, qhov zoo, lossis qhov tseeb ntawm kev ua variable, sib txawv, txawv, lossis tsis txawv. ib qho piv txwv ntawm kev sib txawv; sib txawv; tsis sib xws. Kuj hu ua txhais tau tias square deviation.
Dab tsi yog qhov txawv ntawm qhov sib txawv thiab tus qauv sib txawv?
qauv sib txawv saib seb qhov sib kis ntawm ib pawg ntawm cov lej yog los ntawm qhov txhais tau tias, los ntawm kev saib ntawm square cag ntawm qhov sib txawv. Qhov sib txawv ntsuas qhov nruab nrab qib uas txhua qhov sib txawv ntawm qhov nruab nrab-qhov nruab nrab ntawm tag nrho cov ntaub ntawv cov ntsiab lus.
