Qhov tseem ceeb tshaj plaws thiab kev kwv yees ncua sij hawm kwv yees Kev kwv yees Lub sijhawm kwv yees, hauv kev txheeb cais, kev ntsuas ntawm qhov ntsuas-piv txwv li, qhov nruab nrab (nruab nrab)-ntawm cov pejxeem los ntawm kev suav ib ncua sij hawm, los yog ntau yam ntawm qhov tseem ceeb, nyob rau hauv uas tus parameter yog feem ntau yuav nyob. https://www.britannica.com › science › interval-estimation
Interval kwv yees | txheeb cais | Britannica
txheej txheem suav nrog kev kwv yees ntawm cov pej xeem txhais tau tias. … Cov neeg txheeb cais tau pom tias qhov piv txwv ntawm qhov piv txwv ntawm x̄ yog sib npaug rau cov pejxeem txhais tau tias, μ, thiab qhov sib txawv ntawm tus qauv yog muab los ntawm σ/ √n, qhov twg σ yog cov pejxeem tus qauv sib txawv.
Koj kwv yees cov pejxeem txhais li cas?
Yuav suav qhov txhais tau li cas, ntxiv tag nrho cov txiaj ntsig thiab faib los ntawm tus lej ntawm qhov muaj nqis. Muaj ob hom kev lej lej: pejxeem txhais tau tias (μ) thiab tus qauv ntsuas (x̄).
Kev kwv yees zoo tshaj ntawm cov pejxeem txhais li cas?
Qhov kwv yees zoo tshaj plaws ntawm cov pej xeem txhais tau tias yog tus qauv txhais tau.
Tus kwv kwv tij txheeb ze txhais li cas?
Ib qho piv txwv ntawm cov pej xeem parameter yog ib tus nqi siv los kwv yees cov pej xeem parameter. Piv txwv li, tus qauv txhais tau tias x yog qhov kwv yees kwv yees ntawm cov pej xeem txhais tau tias μ.
Qhov piv txwv ntawm qhov kwv yees yog dab tsi?
Ib qho piv txwv ntawm cov pej xeem parameter yog ib tus nqi ntawm ibtxheeb cais. Piv txwv li, tus qauv txhais tau tias x yog qhov kwv yees kwv yees ntawm cov pejxeem txhais tau μ. Ib yam li ntawd, tus qauv piv txwv p yog qhov kwv yees kwv yees ntawm cov pejxeem feem P. Kev kwv yees ib ntus.
