Hi,
Did you read the help file? Particularly the section "Details".
?lm
Regards,
Pascal
Le 15/02/2013 08:55, email a écrit :
Hello:
I have a 4-column dataset: Crime, Education, Urbanization, Age. I want to
construct a multiple linear regression to find the effect of Education,
Urbanization, and Age on Crime"
lm(Crime ~ Education + Urbanization + Age)
If I use + in above statement, does it mean it will build a model to find
the relationship between Crime and Education when Urbanization and Age are
held constant?
What would be the difference if I drop the term Urbanization + Age ?
lm(Crime ~ Education)
Regards:
John
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and provide commented, minimal, self-contained, reproducible code.
