Displaying 3 results from an estimated 3 matches for "pyar".
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2004 May 16
1
Newbie Poisson regression question
...reviously in SAS. I'm trying to fit simple Poisson
regressions, and I keep getting impossible results: the models predict
negative numbers of cases for many observations. The code for the
models are:
Female.model <- glm(Observed ~ Black + Other, family =
poisson(link=log), offset=log(PYAR), data=Females)
and
Male.model <- glm(Observed ~ Black + Other +
poly(Minus.log.proportion.moved,3), family = poisson(link=log),
offset=log(PYAR), data=Males)
where Observed is the number of cases of childhood ALL in a race-gender
stratum of a county, Black and Other are Boolean variables...
2012 Feb 06
1
appending variable's values in table like fashion
i have two variable
> pyar
[1] "M" "12" "34" "13"
> gita
[1] "U" "22" "33" "44"
want to append gita object below pyar object as
& want to take in anther variable
"M" "12" "34" "13"
"U"...
2004 Jul 20
5
Precision in R
Greetings.
I'm trying to recreate in R some regression models I've done in SAS,
but I'm not getting the same results. My advisor suspects this may be
due to differences in precision between R and SAS. Does anyone know
where I can find specifications for R's type double? (It doesn't seem
to be in the R Language Definition.) Thanks in advance for any help
anyone can