Cov txheej txheem:

Lub ntsiab lus ntawm 75 feem pua yog dab tsi?
Lub ntsiab lus ntawm 75 feem pua yog dab tsi?

Video: Lub ntsiab lus ntawm 75 feem pua yog dab tsi?

Video: Lub ntsiab lus ntawm 75 feem pua yog dab tsi?
Video: Lub Tsev Ntawv Yog Peb Lub - Thoos Lis [ Official MV ] Nkauj Tawm Tshiab 17/2/2022 2024, Kaum ib hlis
Anonim

75th feem pua txhais tau tias uas 75 % ntawm cov tub ntxhais kawm lees paub ua 1570 lossis qis dua ntawm qhov kev xeem thiab 25% ntawm cov tub ntxhais kawm lees paub tau qhab nia siab dua 1570.

Hais txog qhov no, koj ua li cas xam qhov feem pua 75th?

Rau 1, 3, 3, 4, 5, 6, 6, 7, 8, 8:

  1. 25 feem pua = 3.
  2. 50 feem pua = 5.5.
  3. 75 feem pua = 7.

Ib yam li ntawd, tus qauv rau feem pua yog dab tsi? Cov feem pua qib qauv yog: R = P / 100 (N + 1). R sawv cev rau qib kev txiav txim ntawm tus qhab nia. P sawv cev rau feem pua qib. N sawv cev rau tus naj npawb ntawm cov qhab nia hauv qhov kev faib tawm.

Kuj kom paub, dab tsi yog feem pua ntawm cov lus yooj yim?

A feem pua (los yog ib qho centile) yog ib qho kev ntsuas hauv kev txheeb cais. Nws qhia txog tus nqi hauv qab no uas ib feem pua ntawm kev soj ntsuam poob. Piv txwv li, lub 20th feem pua yog tus nqi (los yog qhab nia) hauv qab no uas 20% ntawm cov kev soj ntsuam yuav pom. Txhua ntawm 99 qhov sib faib cov ntsiab lus yog hu ua a feem pua ntawm cov ntaub ntawv teev.

42nd feem pua txhais li cas?

Piv txwv li, xav txog ib lub teb chaws tsuas muaj 100 tus neeg, thiab Mr. Brown yog ntawm 42nd ib hais txog lub cev muaj zog. Qhov no txhais tau tias tias muaj yog 42 tus neeg lub cev tsis muaj zog tshaj nws. Piv txwv li, nyob rau hauv 2013, lub 70th feem pua rau ** GRE yog 156 - yog li, yog tias koj tau qhab nia 156, koj ua zoo dua 70% ntawm cov neeg xeem.

Pom zoo: