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Lecture 2

# CHEMENG 2I03 Lecture 2: Statistics and Regression Premium

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School
Department
Chemical Engineering
Course
CHEMENG 2I03
Professor
Vincent Leung
Semester
Winter

Description
Measurements 2103 Mars, momentum balances chemical "physical mend, and enor analysis allowe you to sample and estumate wule botch. the of the muu med vartable det d Distribut (20) essen te Dda Set mann Descete Varvake. Standard De lahan Normal Ds tributo h Probability that a meaturement finite tata Se SAmply a data ng vandhue (measurand Ample mean ample variance Sx Sample sandard d Measurements 2103 Mars, momentum balances chemical "physical mend, and enor analysis allowe you to sample and estumate wule botch. the of the muu med vartable det d Distribut (20) essen te Dda Set mann Descete Varvake. Standard De lahan Normal Ds tributo h Probability that a meaturement finite tata Se SAmply a data ng vandhue (measurand Ample mean ample variance Sx Sample sandard dFinite Set (cont probabilM of a menured valve ling in of ramfe man the the the ra dowh d Peised ahat the Mean it Imphet the chance at the next ample Campe vananee diffu each time you sample th Ppuhfieu. (whal Thery ut en of the sums anrays of N mac popula on can be eshented by the normal duty baton giri that N large Standard Daw atm (a sinn dad emov) prvides a measure of how a measurement is dusfributed about a sample mean SE provvaes a measure of hor well the sample mean represents the true mean wsed calantate i confidence interval dance Intava True Mur Samet the gnificance level is used instead of C1 1- d matc CI. we usually we tun-tailed Muhiple Data Sets Pooled Statistics M diffaut t locutor N. diferent measurements ed True Me Pooled d. De weten lf of mearrerwns t the same between each rep tert (2-sample) determinu if two seth of data are Sugnifiantfy d.Aernt uued uf mearu ed data is normally distmbuted and ind. upoved t-test assuming en ual vareance ltl ?tv null hyr n rejected w and mees the suntficantly diff rejected When ANOMA om war analysis of vana for 2 maar to co Myane -5 mus variances of diffuunt data sets au the same All means are sane Finite Set (cont probabilM of a menured valve ling in of ramfe man the the the ra dowh d Peised ahat the Mean it Imphet the chance at the next ample Campe vananee diffu each time you sample th Ppuhfieu. (whal Thery ut en of the sums anrays of N mac popula on can be eshented by the normal duty baton giri that N large Standard Daw atm (a sinn dad emov) prvides a measure of
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