Dab tsi yog qhov ncua sij hawm hauv kev txheeb cais?
Dab tsi yog qhov ncua sij hawm hauv kev txheeb cais?

Video: Dab tsi yog qhov ncua sij hawm hauv kev txheeb cais?

Video: Dab tsi yog qhov ncua sij hawm hauv kev txheeb cais?
Video: Wb zaj dab neeg sib hlub tsis tau (Full version) - ZAJ DUB nkauj tawm tshiab 2024, Kaum ib hlis
Anonim

Ib lub sijhawm yog ib tug ntau yam ntawm qhov tseem ceeb rau a txheeb cais . Piv txwv li, tej zaum koj yuav xav tias qhov nruab nrab ntawm cov ntaub ntawv teev poob qhov chaw ntawm 10 thiab 100 (10 < Μ < 100). Lub ntsiab lus muaj feem xyuam yog qhov kwv yees kwv yees, uas yog tus nqi tseeb, zoo li Μ = 55. Qhov ntawd "qhov chaw ntawm 5 thiab 15%" yog ib qho lub sijhawm kwv yees.

Xav txog qhov no, lub caij nyoog txhais li cas hauv kev txheeb cais?

Txhais : Lub sijhawm Hauv txheeb cais rau qhov kev ntsuam xyuas ntawm ib qho parameter, feem ntau ntawm qhov muaj nuj nqis yog feem ntau teev nyob rau hauv uas tus parameter yuav tsum dag. Qhov ntau yam ntawm qhov tseem ceeb no yog hu ua ib ntus . Feem ntau ib ntus raug xaiv xws li qhov parameter ntog hauv nws nrog 95-99% qhov tshwm sim.

Ib sab saum toj no, qhov ntsuas lub sijhawm yog dab tsi? Ib lub sijhawm ntsuas yog ib qho uas qhov kev ncua deb ntawm tus cwj pwm, lossis cov kev xaiv teb, muaj lub ntsiab lus tseeb thiab sib npaug lub sijhawm . Qhov sib txawv ntawm qhov muaj nuj nqis sawv cev qhov sib txawv ntawm tus cwj pwm. Kev ntsuas ncua sij hawm tau kho ntsuas units, tab sis lawv tsis muaj ib tug tas, los yog kiag li, xoom point.

Nyob rau hauv no hais txog, dab tsi yog ncua sij hawm nyob rau hauv kev txheeb cais nrog piv txwv?

Lub sijhawm . Ib lub sijhawm scale yog ib qho uas muaj kev txiav txim thiab qhov sib txawv ntawm ob qhov tseem ceeb yog qhov tseem ceeb. Piv txwv ntawm lub sijhawm Qhov sib txawv muaj xws li: kub (Farenheit), kub (Celcius), pH, SAT tus qhab nia (200-800), qhab nia credit (300-850).

Lub ntsiab lus ntawm cov ntaub ntawv ncua sij hawm yog dab tsi?

Interval cov ntaub ntawv , kuj hu ua integer, yog txhais as a cov ntaub ntawv hom uas ntsuas raws li qhov ntsuas, nyob rau hauv txhua qhov taw tes yog muab tso rau ntawm qhov sib npaug ntawm ib leeg. Interval cov ntaub ntawv ib txwm tshwm sim nyob rau hauv daim ntawv ntawm cov zauv los yog tus lej qhov tseem ceeb uas qhov kev ncua deb ntawm ob lub ntsiab lus yog standardized thiab sib npaug.

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