Cov txheej txheem:

Dab tsi yog cov ntaub ntawv tsis sib xws?
Dab tsi yog cov ntaub ntawv tsis sib xws?

Video: Dab tsi yog cov ntaub ntawv tsis sib xws?

Video: Dab tsi yog cov ntaub ntawv tsis sib xws?
Video: Tsis Yog Hmoob Sib Ntxhais Ntxawm - SODA Poj Laib Khej Me (Cover) 2024, Kaum ib hlis
Anonim

Cov ntaub ntawv tsis sib xws yog cov ntaub ntawv uas peb sau tau uas suav tau thiab tsuas yog muaj qee tus nqi. Piv txwv ntawm discrete cov ntaub ntawv suav nrog cov neeg nyob hauv ib chav kawm, cov lus nug tau teb kom raug, thiab kev khiav hauv tsev ntaus. Cov duab thiab cov duab yog ob txoj hauv kev los qhia qhov discrete cov ntaub ntawv uas koj sau.

Xav txog qhov no, cov ntaub ntawv sib cais yog dab tsi?

Kev txhais ntawm Cov ntaub ntawv tsis sib xws : Cov ntaub ntawv uas tuaj yeem muab faib ua kev faib tawm. Cov ntaub ntawv tsis sib xws yog nyob ntawm suav. Tsuas yog tus naj npawb finite ntawm qhov tseem ceeb tuaj yeem ua tau, thiab cov txiaj ntsig tsis tuaj yeem muab faib ua lub ntsiab lus. Nws yog feem ntau suav nrog tag nrho cov lej.

Tsis tas li ntawd, cov ntaub ntawv tsis sib xws yog dab tsi? Quantitative cov ntaub ntawv tej zaum yuav yog tsis paub meej los yog tsis tu ncua . Tag nrho cov ntaub ntawv uas yog qhov tshwm sim ntawm kev suav yog hu ua quantitative discrete data . Cov no cov ntaub ntawv noj tsuas yog qee qhov txiaj ntsig ntawm tus lej. Yog tias koj suav cov xov tooj uas koj tau txais rau txhua hnub ntawm lub lim tiam, koj yuav tau txais txiaj ntsig xws li xoom, ib, ob, lossis peb.

Tom qab ntawd, plaub yam sib txawv ntawm cov ntaub ntawv tsis sib xws yog dab tsi?

Categorical/Discrete/Qualitative data

  • Nominal (unordered) variables, xws li poj niam txiv neej, haiv neeg keeb kwm, kev ntseeg lossis kev nom kev tswv.
  • Ordinal (ordered) variables, e.g., qib, theem nyiaj tau los, qib tsev kawm ntawv.
  • Discrete interval variables uas tsuas muaj ob peb qhov tseem ceeb, xws li, tus naj npawb ntawm cov sij hawm sib yuav.

Puas yog khau loj discrete lossis txuas ntxiv?

1. Nkawm khau loj yog tus lej tag nrho ( tsis paub meej ), tab sis lub hauv paus ntsuas yog ko taw ntev uas yog ntsuas ( tsis tu ncua ) cov ntaub ntawv. Txawm ib nrab qhov ntau thiab tsawg tseem tsis tau ntsuas tiag tiag tab sis "tag nrho tus lej", vim tias tsis muaj dab tsi ntawm qhov loj 8 thiab 8 1/2. 2.

Pom zoo: