Apercentile qeb piav qhia txog feem pua ntawm cov neeg hauv pab pawg sib piv uas tau qhab nia qis dua tus qhab nia tshwj xeeb. Piv txwv li, yog tias tus tub ntxhais kawm qhov qhab nia nyoos ntawm 62 sib raug rau qhov feem pua ntawm 98, tus tub ntxhais kawm ntawd ua tau zoo dua li 98% ntawm lwm tus neeg xeem.
Zoo qhov feem pua yog dab tsi?
Ib feem pua ntawm cov qhab nia ntawm 60 lossis siab dua yog suav tias siab tshaj qhov nruab nrab. Cov qhab nia National Percentile Rank (NP) feem ntau ua raws cov qhab nia Raw (RS) thaum koj saib hla nplooj ntawv ntawm cov ntawv qhia ua tiav ntawm sab laug mus rau sab xis.
Tus nqi feem pua qhia koj li cas?
Percentile qeb feem ntau qhia tias tus lej ntawm 1 txog 99, nrog 50 yog qhov nruab nrab. Yog li yog tias tus tub ntxhais kawm tau qhab nia feem pua ntawm 87, nws txhais tau tias lawv ua tau zoo dua li 87% ntawm lwm tus tub ntxhais kawm hauv nws pawg qauv.
Tus piv txwv qib feem pua yog dab tsi?
Qhov feem pua ntawm cov qhab nia yog feem pua ntawm cov qhab nia hauv nws qhov kev faib tawm zaus uas sib npaug lossis qis dua nws. Piv txwv li, cov qhab nia xeem uas ntau dua 75% ntawm cov qhab nia ntawm cov neeg xeem tau hais tias nyob ntawm 75 feem pua, qhov twg 75 yog qhov feem pua.
95 feem pua txhais li cas?
Lub sij hawm 95th feem pua yog hais txog qhov taw tes uas 5% ntawm cov pej xeem teeb tsa yuav tshaj li tus nqi siv. Txhawm rau txiav txim siab tus nqi feem pua, cov txheej txheem sib txawv tau muab faib ua 100 pawg sib npaug.
