Ukutenxa koMgangatho oDityanisiweyo = sqrt(((n1-1)*s1*s1 + (n2-1)*s2*s2 + n1 * n2 / (n1 + n2) * (m1*m1 + m2*m2 – 2 * m1 * m2)) / (n1 + n2 -1)); Xa amaqela angaphezulu kwama-2 edityaniswa, amaqela amabini okuqala adityaniswa kuqala, iziphumo zidityaniswa neqela lesithathu, ngoko ngokulandelelanayo neqela ngalinye elilandelayo.
Ngokufanayo, Yeyiphi ifomula esetyenziselwa ukubala i-arithmetic mean edibeneyo? Intsingiselo edibeneyo: u02c9x12=N1u22c5u02c9x1+N2u22c5u02c9x2N1+N2.
Kuthetha ukuthini ukudibanisa kwizibalo? Idityanisiwe kuthetha ukuzongeza, kodwa kuphela ii-coefficients zazo. Ukudibanisa amagama anje ngenene kubaluleke kakhulu kwizibalo, kuba ikuvumela ukuba wenze lula amabinzana ukuze alawuleke ngakumbi. Umzekelo, kuluncedo ngokwenene xa udibanisa okanye uthabatha iipolynomials!
Ubala njani intsingiselo edibeneyo kunye nokutenxa okusemgangathweni okudityanisiweyo? Ukutenxa komgangatho odityanisiweyo Sc kungabalwa ngokuthatha ingcambu ye Sc2. Umzekelo: Kwiqela labasebenzi abangamadoda abangama-50, ukutenxa okuqhelekileyo kunye nomgangatho womvuzo wabo wemihla ngemihla ziidola ezingama-63 kunye ne-9 yeedola ngokulandelelanayo. Kwiqela labasebenzi ababhinqileyo abangama-40 ezi xabiso ziidola ezingama-54 kunye needola ezi-6 ngokulandelanayo.
Okwesibini Uyifumana njani intsingiselo edibeneyo kunye nokwahluka?
Ndingayifumana phi idityanisiwe Hm?
Yi ibalwa ngokwahlula inani lemigqaliselo ngokuphindaphindana kwenani ngalinye kuthotho. Ke ngoko, intsingiselo ye-harmonic yi-reciprocal ye-arithmetic mean ye-reciprocals. Intsingiselo ye-harmonic ye-1,4, kunye ne-4 yile: 3 ( 1 1 + 1 4 + 1 4 ) = 3 1.
emva koko Ulufumana njani ukutenxa komgangatho odityanisiweyo wamaqela amabini? Naxa sikhupha iinguqu ezimbini ezingaqhelekanga, sisengeza ukuhluka kwazo; ukukhupha iinguqu ezimbini kwandisa ukuhluka ngokubanzi kwiziphumo. Sinokufumana ukutenxa okusemgangathweni kokuhanjiswa okudibeneyo nge ukuthatha ingcambu yeenguqu ezidibeneyo.
Ngaba kudityanisiwe kuthetha ukudibanisa okanye ukuphindaphinda? Ukudibanisa amagama afanayo, yongeza i i-coefficients kwaye uphindaphinde isibalo ngeenguqu eziqhelekileyo.
Uyifumana njani intsingiselo yeendlela ezimbini?
Kulula ukuwabala: dibanisa onke amanani, uze uwahlule ngamanani akhoyo. Ngamanye amazwi kunjalo isixa-mali esahlulwe ngenani.
Yeyiphi intsingiselo efunekayo ukuze kufunyanwe ukutenxa komgangatho odibeneyo? I-arithmetic mean edibeneyo ingabalwa ukuba siyayazi intsingiselo kunye nenani lezinto kwiqela ngalinye ledatha. 1, 2, , σ 1, σ 2 zitenxa kunye nomgangatho wedatha ezimbini ezine-n 1 kunye n 2 njengenani leezakhi ngokulandelelanayo.
Ithini ifomyula ye-harmonic edibeneyo ithetha?
Intsingiselo ye-harmonic luhlobo lomlinganiselo wamanani. Ibalwa ngokwahlula inani lemigqaliselo ngokuphindaphindana kwenani ngalinye kuthotho. Ke ngoko, intsingiselo ye-harmonic yi-reciprocal ye-arithmetic mean ye-reciprocals. Intsingiselo yeharmonic ye-1, 4, kunye ne-4 yile: 3 (1 1 + 1 4 + 1 4) = 3 1 .
Yintoni edibeneyo i-harmonic ithetha? I-Harmonic ithetha uhlobo lomndilili okhoyo ibalwa ngokwahlula inani lamaxabiso kuluhlu lwedatha ngokwesambuku sokuphindaphindana (1/x_i) yexabiso ngalinye kuluhlu lwedatha. … Intsingiselo yeharmonic isoloko isetyenziselwa ukubala umyinge womlinganiselo okanye iireyithi.
Yintoni ubudlelwane phakathi kwe-AM GM kunye ne-Hm?
Ubudlelwane phakathi kwe-AM GM HM inokumelwa ngefomula AM × HM = GM2. Apha imveliso ye-arithmetic mean(AM) kunye ne-harmonic mean(HM) ilingana nesikwere sentsingiselo yejometri(GM).
Uyifumana njani i-harmonic edibeneyo ithetha?
Ifomula ngokubanzi yokubala intsingiselo ye-harmonic yile:
- Intsingiselo yeHarmonic = n / (∑1/x_i)
- Ubunzima beNtengo yeHarmonic = (∑w_i) / (∑w_i/x_i)
- I-P/E (Isalathiso) = (0.4+0.6) / (0.4/50 + 0.6/4) = 6.33.
- I-P/E (Isalathisi) = 0.4×50 + 0.6×4 = 22.4.
Usongeza njani intsingiselo kunye nokutenxa okusemgangathweni? Umlinganiselo u-E(X+Y) ulingana nesimbuku seendlela E(X) kunye no-E(Y), okt, kwimeko yakho 2+3.8=5.8. Ukutenxa okusemgangathweni yingcambu yomahluko weVar(X+Y)=Var(X)+Var(Y)+2Cov(X,Y). Ukutenxa okusemgangathweni kubalwa ngokwahlukileyo ukuba isampuli yakho ihambelana nabantu bonke okanye hayi.
Ngaba kudityanisiwe kuthetha ukongeza?
Ngaba ukuphindaphinda okudityanisiweyo?
Yintoni imisebenzi edibeneyo? Zezo apho imisebenzi eyahlukeneyo ye-arithmetic ivela: ukongeza, ukuthabatha, ukuphindaphinda kunye nokwahlula.
Uyifumana njani intsingiselo yeendlela? Yenza isishwankathelo sazo zonke iisampuli zakho kunye yahlula ngenani leendlela.
Uwubala njani umvuzo ophakathi odityanisiweyo?
I-avareji yemivuzo yonyaka ibalwa ngokwahlula imivuzo ehlawulwa ngumqeshi kubasebenzi ngexesha lonyaka orhafiswayo (ibhokisi yesi-5 yomvuzo we-W-2) ngenani lee-FTEs zonyaka.. Isiphumo sisondezwe ukuya kutsho kweyona ikufutshane i-$1,000. Umzekelo: Kunyaka werhafu ka-2010, umqeshi uhlawula i-$224,000 ngomvuzo kwaye une-10 FTEs.
Iyintoni intsingiselo ye-harmonically? 1.a. Ye okanye enxulumene nemvisiswano. b. Ukukholisa indlebe: iziphumo ze-harmonic orchestral.
Uyifumana njani isimbuku sokubuyiselana?
Uyifumana njani intsingiselo ye-quadratic? Intsingiselo yequadratic (ekwabizwa ngokuba yingcambu ithetha isikwere*) luhlobo lomndilili.
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Ilinganisa ubukhulu obupheleleyo beseti yamanani, kwaye ibalwa ngolu hlobo:
- Ukuphinda kabini inani ngalinye,
- Ukufumana intsingiselo yezi zikwere,
- Ukuthatha ingcambu yalo mndilili.
Ubala njani uchungechunge lwe-harmonic?
Uchungechunge lwe-harmonic lu Isamba ukusuka ku-n = 1 ukuya kwi-infinity kunye namagama 1/n. Ukuba ubhala amagama ambalwa okuqala, uluhlu luqhubeka ngolu hlobo lulandelayo: 1 + 1/2 + 1/3 + 1/4 + 1/5 +. . .njl. Njengoko u-n ethandeka kwi-infinity, u-1/n uye ku-0.
Iyintoni intsingiselo yamanani 2 3 5? I-Harmonic Mean = I-Harmonic Mean = 2.9 (approx) Ngoko, i-Harmonic Mean yala manani ngu-2.9!
Yintoni unxulumano phakathi kwe-arithmetic mean kunye ne-geometric mean?
Vumela u-A kunye no-G babe ziiNdlela ze-Arithmetic kunye neeNdlela zeJiyometri ngokulandelelana kwamanani amabini a-positive u-m no-n. Emva koko siye safumana A = m + n/2 kunye no-G = ±√mn. Ekubeni, u-m no-n bengamanani a-positive, kungoko kucacile ukuba u-A > G xa u-G = -√mn.
Yintoni ubudlelwane phakathi kwe-AM kunye ne-GM Class 11?
I-AM okanye i-Arithmetic Mean yintsingiselo okanye i-avareji yeseti yamanani ebalwa ngokudibanisa yonke imiqathango kwiseti yamanani. amanani kunye nokwahlula isamba ngenani lilonke lemigaqo. I-GM okanye i-Geometric Mean lixabiso elilinganiselweyo okanye igama eliphakathi kwiseti yamanani kwinkqubela phambili yejometri.
Yintoni i-AM GM kunye ne-HM yokubhala ifomula nayo? Makubekho amanani amabini a kunye no b, a, b > 0. emva koko AM = a+b/2 , GM =ab, HM =2ab/a+b.