Displaying 2 results from an estimated 2 matches for "pesticideb".
Did you mean:
pesticide
2011 Jul 25
2
Wide confidence intervals or Error message in a mixed effects model (nlme)
...nce intervals of the variance of the
random factor range from 0 to inf. Any comments as to why I get
unrealistic confidence intervals for the random factor?
In another study, I am investigating the interactions between pesticides
in a two-way design: (pesticideA x no pesticide A) crossed with
(pesticideB x no pesticide B). The blocking is as above, and the data
are unbalanced again. The model is defined as
model<-lme(growth.rate~pestA*pestB,random=~1|block). When I run
intervals (model), I usually get the following error message: "Error in
intervals.lme(model) : Cannot get confidence interv...
2011 Jul 20
0
Analysis of unbalanced data in nlme or car
...ence intervals of the variance of the random
factor range from 0 to inf. Any comments as to why I get unrealistic
confidence intervals for the random factor?
In another study, I am investigating the interactions between pesticides
in a two-way design: (pesticideA x no pesticide A) crossed with
(pesticideB x no pesticide B). The blocks and number of replicates is as
above, and the data are unbalanced again. The model is defined as
model<-lme(growth.rate~pestA*pestB,random=~1|block). When I run
intervals (model), I usually get the following error message: "Error in
intervals.lme(model) : Canno...