2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Vim tias, thaum John Tukey tau tsim lub thawv-thiab-whisker zaj dab neeg hauv 1977 los tso saib cov txiaj ntsig no, nws tau xaiv 1.5 × IQR raws li kab lus qhia rau cov neeg tawm. Qhov no tau ua haujlwm zoo, yog li peb tau txuas ntxiv siv tus nqi ntawd txij li thaum.
Leej twg tsim IQR?
Paul Velleman, tus kws txheeb cais ntawm Cornell University, yog tus tub ntxhais kawm ntawm John Tukey, uas tau tsim lub thawv ntawv thiab 1.5IQR Txoj Cai.
thawj qhov sib txawv yog dab tsi?
The IQR piav qhia qhov nruab nrab 50% ntawm qhov tseem ceeb thaum xaj los ntawm qis tshaj mus rau siab tshaj. Txhawm rau nrhiav qhov sib txawv ntawm qhov sib txawv (IQR), thawj zaug pom qhov nruab nrab (tus nqi nruab nrab) ntawm qis thiab sab saud ib nrab ntawm cov ntaub ntawv. Cov nqi no yog quartile 1 (Q1) thiab quartile 3 (Q3). IQR yog qhov txawv ntawm Q3 thiab Q1.
Vim li cas peb thiaj pom qhov sib txawv?
The IQR yog siv los ntsuas seb qhov sib kis cov ntaub ntawv cov ntsiab lus hauv ib txheej yog los ntawm qhov txhais tau li cas ntawm cov ntaub ntawv teeb. Qhov siab dua IQR, qhov ntau nthuav tawm cov ntsiab lus ntawm cov ntaub ntawv; Hauv qhov sib piv, qhov me me ntawm IQR, ntau cov ntaub ntawv cov ntsiab lus nyob ib ncig ntawm qhov nruab nrab.
Dab tsi yog qhov interquartile ntau yam tseem hu ua?
Hauv kev piav qhia txheeb cais, qhov sib txawv ntawm qhov sib txawv (IQR), tseem hu ua qhov nruab nrab, nruab nrab 50%, lossis H-spread , yog qhov ntsuas ntawm kev faib tawm, sib npaug. qhov sib txawv ntawm 75th thiab 25th feem pua, los yog nruab nrab ntawm sab sauv thiab qis quartiles, IQR=Q3 −Q1. Hauv lwm lo lus, IQR yog thawj quartile …
Pom zoo:
Los ntawm cov khoom sib npaug ntawm kev sib npaug?
Cov cuab yeej sib luag ntawm kev sib luag hauv paus hais uas ob sab ntawm kev sib npaug yog tib yam. Qhov no ua rau kev txiav txim siab vim tias thaum ib yam dab tsi sib luag, nws yog tib yam ntawm ob sab. Cov cuab yeej sib luag ntawm kev sib npaug tso cai rau sab laug ntawm qhov sib npaug los ua sab xis thiab rov ua dua.
Cov kab kab kab kab kab ua kab mob txaus ntshai npaum li cas?
Nyob rau hauv peb thiab tom ntej instars ntawm lawv txoj kev loj hlob, Pine processionary caterpillars yog mob heev rau daim tawv nqaij ntawm tib neegthiab lwm yam tsiaj. Kev sib cuag yooj yim nrog cov plaub hau ntawm kab ntsig tuaj yeem ua rau pob khaus hnyav (urticaria) thiab khaus qhov muag, thiab qee tus neeg yuav muaj kev fab tshuaj.
Leej twg tsim kev sib npaug plaub npaug?
Nyob ib ncig ntawm 700AD cov kev daws teeb meem dav dav rau kev sib npaug plaub npaug, lub sijhawm no siv cov lej, tau tsim los ntawm tus lej Hindu hu ua Brahmagupta Brahmagupta Brahmagupta yog thawj tus muab cov cai los suav nrog xoom. Cov ntawv sau los ntawm Brahmagupta yog nyob rau hauv elliptic nqe lus nyob rau hauv Sanskrit, raws li yog ib qho kev xyaum nyob rau hauv Indian lej.
Thaum twg ob txoj kab uas tsis yog kab sib npaug sib npaug?
Ob txoj kab uas tsis sib xws yog qhov sib npaug yog tias lawv txoj kab nqes tib yam. Txhua ob kab ntsug yog sib npaug. Dab tsi yog ob kab Nonverttical sib npaug? Yog tias ob txoj kab tsis sib npaug sib npaug, ces lawv txoj kab nqes sib npaug.
Leej twg yog tus sib npaug thiab sib npaug?
Yog li ntawd, yog tias tag nrho cov sab ntawm lub polygon yog tib qhov ntev, lub polygon tau hais tias sib npaug, thaum tag nrho cov kaum sab hauv ntawm lub polygon yog qhov sib npaug. tib qhov kev ntsuas, tus polygon tau hais tias yog equiangular.
