Re: [R] nested, unbalanced anova

2013-01-06 Thread peter dalgaard
On Jan 6, 2013, at 04:00 , Pfeiffer, Steven wrote: Hello, For an experiment, I selected plots of land within a forest either with honeysuckle or without honeysuckle. Thus, my main factor is fixed, with 2 levels: honeysuckle present(n=11) and honeysuckle absent(n=8). Within each plot of

Re: [R] nested, unbalanced anova

2013-01-06 Thread Spencer Graves
On 1/6/2013 12:45 AM, peter dalgaard wrote: On Jan 6, 2013, at 04:00 , Pfeiffer, Steven wrote: Hello, For an experiment, I selected plots of land within a forest either with honeysuckle or without honeysuckle. Thus, my main factor is fixed, with 2 levels: honeysuckle present(n=11) and

Re: [R] nested, unbalanced anova

2013-01-06 Thread peter dalgaard
On Jan 6, 2013, at 09:45 , peter dalgaard wrote: Just avoid things like Type-III sums of squares (base R won't do them, but popular add-ons will) because they get it wrong when cell counts are unequal. That might be a bit unfair. Type-III methodology has its proponents, I'm just not one

Re: [R] nested, unbalanced anova

2013-01-06 Thread John Fox
-Original Message- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of peter dalgaard Sent: Sunday, January 06, 2013 1:56 PM To: peter dalgaard Cc: r-help@r-project.org Subject: Re: [R] nested, unbalanced anova On Jan 6, 2013, at 09:45

[R] nested, unbalanced anova

2013-01-05 Thread Pfeiffer, Steven
Hello, For an experiment, I selected plots of land within a forest either with honeysuckle or without honeysuckle. Thus, my main factor is fixed, with 2 levels: honeysuckle present(n=11) and honeysuckle absent(n=8). Within each plot of land, I have a trenched subplot and an untrenched subplot.