多元线性回归数据说明文档

twins49

twinsBurt’stwindata

Description

ThegivendataareIQscoresfromidenticaltwins;oneraisedinafosterhome,andtheotherraisedbybirthparents.Format

Thisdataframecontainsthefollowingcolumns:CSocialclass,1=high,2=medium,3=lowIQbbiologicalIQffosterSource

Burt,C.(1966).Thegeneticestimationofdifferencesinintelligence:Astudyofmonozygotictwinsrearedtogetherandapart.Br.J.Psych.,57,147-153.References

Weisberg,S.(2005).AppliedLinearRegression,3rdedition.NewYork:Wiley,Problem6.16.Examples

data(twins)

ufcHeight-diameterdataforUpperFlatCreek,Idaho

Description

ThesedataareforestinventorymeasuresfromtheUpperFlatCreekstandoftheUniversityofIdahoExperimentalForest,dated1991.

The?leufccontainsallthedata.ufcwccontainsonlyWesternredcedar.ufcgfcontainsonlygrand?r.Usage

data(ufcgf)

50Format

Adataframewiththefollowing5variables.PlotPlotnumberTreeTreewithinplot

UN1

SpeciesafactorwithlevelsDF=Douglas-?r,GF=Grand?r,SF=Subalpine?r,WL=Western

larch,WC=Westernredcedar,WP=WhitepineDbhDiameter137cmperpendiculartothebole,mmHeightHeightofthetree,indecimetersSource

AndrewRobinsonReferences

Weisberg,S.(2005).AppliedLinearRegression,thirdedition.NewYork:Wiley.Examples

data(ufcgf)

UN1NationalstatisticsfromtheUnitedNations

Description

Demographicdatafor193places,mostlyUNmembers,butalsootherareaslikeHongKongthatarenotindependentcountries.Usage

data(UN)Format

Thisdataframecontainsthefollowingcolumns:

LocalityLocalityname.Insomecases,thegeographicareaissmallerthanacountry;forexample,

HongKongFertilityExpectednumberoflivebirthsperfemale,2000PPgdpPercapita2001GDP,inUS$Details

ThesedatawerecollectedatpublishedbytheUNfromavarietyofsources.Seeoriginalsourceforadditionalfootnotesconcerningvaluesforindividualcountries.Countrynamesaregiveninthe?rstcolumnofthedata?le.