Displaying 1 result from an estimated 1 matches for "herdsize".
2007 Aug 16
0
Linear models and a simple time series
...te of the herd
(A simplification, but preserves the essentials.)
My question is whether the R procedure lm() is an appropriate tool to
estimate the growth rate.
year <-1991:2007
killed
<-c(7008,6663,8545,7868,9286,9365,10443,6389,6004,8631,13277,12029,10081,989
9,11023,9926,7000)
herdsize
<-c(50697,54804,46462,42410,43593,42138,43037,44495,45968,47376,45469,38815,
37186,37135,31760,31206,28563)
year.0 <-which(year==1991)
year.1 <-year.0+1
year.ult <-length(year)
year.penult<-length(year)-1
y<-heardsize[year.1:year.ult]
x<-herdsize[year.0:year.penul...