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Video: Yuav ua li cas koj pom qhov sib npaug regression ntawm TI 84?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Yuav xam cov Linear Regression (ax+b): • Nias [STAT] nkag mus rau cov ntawv qhia zaub mov. Nias lub xub xub kom ncav cuag CALC ntawv qhia zaub mov thiab nias 4: LinReg(ax+b). Xyuas kom Xlist tau teeb tsa ntawm L1, Ylist tau teeb tsa ntawm L2 thiab Khw RegEQ tau teeb tsa ntawm Y1 los ntawm nias [VARS] [→] 1:Function thiab 1:Y1.
Ib yam li ntawd, tib neeg nug, koj nrhiav tau txoj kab regression ntawm TI 84 Plus li cas?
TI-84: Tsawg Squares Regression Kab (LSRL)
- Sau koj cov ntaub ntawv hauv L1 thiab L2. Nco tseg: Nco ntsoov tias koj qhov Stat Plot yog nyob rau thiab qhia cov npe koj siv.
- Mus rau [STAT] "CALC" "8: LinReg(a+bx). Nov yog LSRL.
- Sau L1, L2, Y1 tom kawg ntawm LSRL. [2nd] L1, [2nd] L2, [VARS] "Y-VARS" "Y1" [ENTER]
- Mus saib, mus rau [Zoom] "9: ZoomStat".
Ib yam li ntawd, qhov sib npaug ntawm txoj kab regression yog dab tsi? Ib linear kab regression muaj ib kev sib npaug ntawm daim ntawv Y = a + bX, qhov twg X yog qhov txawv txav thiab Y yog qhov txawv txav. Txoj kab nqes ntawm kab yog b, thiab a yog qhov cuam tshuam (tus nqi ntawm y thaum x = 0).
Ntawm no, koj yuav nrhiav tau qhov sib npaug regression los ntawm cov ntaub ntawv li cas?
Lub Linear Regression Equation Cov kev sib npaug muaj daim ntawv Y = a + bX, qhov Y yog qhov sib txawv ntawm qhov sib txawv (uas yog qhov sib txawv uas mus rau ntawm Y axis), X yog qhov sib txawv ntawm tus kheej (piv txwv li nws yog plotted ntawm X axis), b yog txoj kab nqes ntawm txoj kab. thiab a yog y-intercept.
Dab tsi yog qhov quadratic regression equation rau cov ntaub ntawv teev?
A quadratic regression yog tus txheej txheem ntawm nrhiav tus kev sib npaug ntawm parabola uas zoo tshaj plaws haum a teeb ntawm cov ntaub ntawv . Raws li qhov tshwm sim, peb tau txais ib qho kev sib npaug ntawm daim ntawv: y=ax2+bx+c where a≠0. Txoj kev zoo tshaj los nrhiav qhov no kev sib npaug manually yog siv qhov tsawg tshaj plaws squares txoj kev.
Pom zoo:
Yuav daws qhov tsis sib npaug ntawm cov kab sib npaug thiab cov kab sib npaug sib npaug li cas?
Kev daws qhov tsis sib npaug ntawm qhov sib npaug yog zoo ib yam li kev daws cov kab sib npaug. Qhov sib txawv tseem ceeb yog koj tig lub cim tsis sib xws thaum faib lossis muab faib los ntawm tus lej tsis zoo. Graphing linear inequalities muaj ob peb qhov sib txawv ntxiv. Qhov uas yog qhov ntxoov ntxoo muaj xws li qhov tseem ceeb uas qhov kev tsis sib xws ntawm cov kab tawm muaj tseeb
Puas yog txhua qhov sib npaug sib npaug sib npaug?
Thawj qhov sib npaug sib npaug yog qhov tseeb yog tias nws muaj kev txuag kom muaj nuj nqis. Piv txwv li, qhov sib npaug sib cais yeej ib txwm muaj tseeb, txij li lub ntsiab lus lawv yog ntawm daim ntawv: M(y) + N(t) = 0, yog li ϕ(t, y) = A(y) + B(t) yog a khaws cia kom muaj nuj nqis
Nws puas yuav ua rau pom qhov sib npaug ntawm kab sib npaug mus rau ib kab thiab los ntawm ib qho taw tes ntawm kab?
Qhov sib npaug ntawm ib kab uas yog parallel lossis perpendicular rau ib kab? Cov lus teb tau: Cov nqes hav ntawm cov kab sib npaug sib npaug. Hloov txoj kab nqes paub thiab cov kev sib koom ua ke ntawm ib qho taw tes ntawm lwm txoj kab rau hauv daim ntawv point-slope kom pom qhov sib npaug ntawm kab sib npaug
Yuav ua li cas koj pom qhov sib npaug ntawm qhov nqus ntawm qhov nqus?
X = [Fe(SCN)2+] thiab yuav tsum tau txiav txim los ntawm tus qauv nkhaus. Tom qab ntawd koj tuaj yeem xam qhov sib npaug tas li, Keq, siv qhov sib npaug sib npaug. Tus qauv nkhaus yog ib zajlus ntawm Absorbance piv [Fe(SCN)2+] (Daim duab 8.1). Nws tuaj yeem siv los muab peb cov concentration ntawm cov tshuaj thaum muab cov absorbance
Dab tsi yog qhov sib txawv ntawm cov kab lus sib npaug thiab qhov sib npaug sib npaug?
Cov kab lus sib npaug muaj qhov muaj txiaj ntsig zoo ib yam tab sis tau nthuav tawm nyob rau hauv ib hom ntawv sib txawv uas siv cov khoom ntawm cov lej xws li ax + bx = (a + b) x yog cov kab lus sib npaug. nruj me ntsis, lawv tsis yog 'sib npaug', yog li peb yuav tsum siv 3 kab sib luag hauv 'sib npaug' es tsis yog 2 raws li qhia ntawm no