Poly Régression multiple

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Master2(NCC(
Modules(Statistiques(–(V.(Fourcassié(&(C.(Jost(
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INTRODUCTION(AUX(MODELES(LINEAIRES(GENERAUX(
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EXERCICES(
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SOMMAIRE(
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1'EXEMPLE(DE(REGRESSION(SIMPLE(:(REGRESSION(DE()0123421(SUR(50678697 ................................ 2'
:'EXEMPLE(DE(REGRESSION(MULTIPLE(:(REGRESSION(DE()0123421(SUR(;659<(ET(=>?@ ................ 10'
3'EXEMPLE(DE(REGRESSION(MULTIPLE(:(REGRESSION(DE()0123421(SUR(=>?@(27("=4..................... 19'
4'EXEMPLE(DE(REGRESSION(MULTIPLE(:(TRAITEMENT(DU(FICHIER(FOURMI_TRANSPORT ............... 23'
5'POUR(ALLER(PLUS(LOIN(:(QUELQUES(OUVRAGES ......................................................................... 31'

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1 Exemple(de(régression(simple(:(régression(de(lifexpef(sur(birthrat(
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Description(du(Tableau(Country.txt((
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1.1 Préparation!du!Tableau!Country.txt!
1.1.1 Charger!le!jeu!de!données!dans!R!et!le!placer!dans!un!tableau!nommé!«!Country!»!
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Nom
colonne
Signification
country
pop92
Population, 1992, in millions
urban
Percent urban, 1992
gdp
GDP per capita
lifeexpm
Male life expectancy 1992
lifeexpf
Female life expectancy 1992
birthrat
Births per 1000 population, 1992
deathrat
Deaths per 1000 people, 1992
infmr
Infant mortality rate 1992 (per 1000 live
births)
fertrate
Fertility rate per woman, 1990
region
Region of the world
develop
Status as Developing Country
radio
Radios per 100 people
phone
Phones per 100 people
hospbed
Hospital beds per 10,000 people
docs
Doctors per 10,000 people

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1.1.2 Compte!le!nombre!de!valeurs!manquantes!dans!le!tableau!Country!pour!chaque!
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1.1.3 Elimine!les!observations!ayant!des!valeurs!manquantes!
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1.1.4 Calcule!la!moyenne!et!l’écartHtype!des!VI!
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1.2 Représenter!la!variable!lifeexpf!en!fonction!de!la!variable!birthrat!
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1.3 Calculer!les!coefficients!de!la!droite!des!moindres!carrés!et!leur!intervalle!de!
confiance!
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1.4 Ecrire!l’équation!de!la!droite!de!régression!et!interpréter!les!résultats!
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1.5 Demander!la!table!d’anova!de!l’analyse!de!régresion!
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