Tus tsis paub cov pej xeem nruab nrab yog hu ua qhov ntsuas. Cov piv txwv paub qhov nruab nrab yog hu ua statistic.
Puas qhov nruab nrab yog qhov ntsuas?
Ib qhov ntsuas yog ib qho tus lej, zoo li qhov nruab nrab lossis feem pua, uas piav qhia tag nrho cov pejxeem.
Puas yog 38% qhov ntsuas lossis qhov txheeb cais?
STATISTIC - tus nqi ntawm 38% yog tus lej piav qhia ntawm SAMPLE ntawm pawg thawj coj hauv tsev kawm qib siab. Koj nyuam qhuav kawm 8 nqe lus!
Puas yog qhov ntsuas nruab nrab?
Average is tus lej uas piav qhia qhov chaw nruab nrab ntawm cov ntaub ntawv, cov lej uas ntsuas lossis suav. Qhov nruab nrab siv feem ntau yog qhov nruab nrab (qhov nruab nrab ntawm lej), hom (feem ntau tus lej), nruab nrab (nruab nrab tus lej thaum tus lej tau teev tsawg tshaj plaws rau qhov loj tshaj).
Puas yog 50 qhov ntsuas lossis qhov txheeb cais?
A statistic thiab qhov ntsuas zoo sib xws. Lawv yog ob qho kev piav qhia ntawm pawg, xws li "50% ntawm cov tswv dev nyiam X Hom dev noj." Qhov sib txawv ntawm ib qho kev txheeb cais thiab ib qho kev ntsuas yog qhov kev txheeb cais piav qhia tus qauv. Ib qho kev ntsuas piav qhia tag nrho cov pejxeem.
