Puas yog feem pua thiab qhov piv txwv cuam tshuam li cas?
Puas yog feem pua thiab qhov piv txwv cuam tshuam li cas?

Video: Puas yog feem pua thiab qhov piv txwv cuam tshuam li cas?

Video: Puas yog feem pua thiab qhov piv txwv cuam tshuam li cas?
Video: Saib Mis paub Poj niam (hluas nkauj) tus yam ntxwv lub siab 2024, Kaum ib hlis
Anonim

Feem pua txhais tau tias puas lossis ib puas thiab sau nrog lub cim, %. Feem pua yog a piv yog peb piv cov lej rau 100 uas txhais tau tias 1% yog 1/100.

Piv txwv li, qhov sib txawv ntawm qhov feem pua thiab qhov sib piv yog dab tsi?

Raws li lub npe qhov sib txawv ntawm qhov ratio thiab feem pua yog tias piv yog tus lej sawv cev a kev sib piv ntawm ob yam thaum feem pua yog tus nqi, tus lej lossis tus nqi ntawm ib yam dab tsi, suav tias yog ib feem ntawm tag nrho ntawm 100; ib feem ntawm tag nrho.

Ib tug kuj yuav nug, qhov sib txawv ntawm qhov ratio thiab feem pua yog dab tsi? Ntsiab Qhov sib txawv ntawm qhov sib piv thiab Qhov ratio yog txhais raws li tus kev sib piv ntawm qhov ntau thiab tsawg ntawm ob qhov ntau ntawm tib lub tsev. Loj , ntawm qhov tod tes, hais txog qhov sib npaug ntawm ob piv . Cov piv yog ib qho kev qhia thaum kev faib ua feem yog ib qho kev sib npaug uas yuav daws tau.

Kuj tseem paub, cov nqi tsev thiab qhov sib npaug sib npaug li cas?

Thaum twg tus nqi yog qhia raws li qhov ntau ntawm 1, xws li 2 ko taw ib ob lossis 5 mais toj ib teev, lawv raug hu ua unit tus nqi . Yog tias koj muaj ntau yam - unit tus nqi xws li 120 tus tub ntxhais kawm rau txhua 3 lub tsheb npav, thiab xav nrhiav ib leeg- unit tus nqi , sau a piv sib npaug ntawm ntau- unit tus nqi nrog 1 raws li lub sij hawm thib ob.

Puas yog qhov ratio ib feem?

Piv txwv . A piv piv ob tus lej lossis ob qhov ntau uas ntsuas nrog tib chav. Thaum a piv yog sau rau hauv feem form, ua feem yuav tsum tau yooj yim. Yog tias nws yog qhov tsis tsim nyog feem , peb tsis hloov nws mus rau tus lej sib xyaw.

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