The split-plot tag has no wiki summary.
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38 views
Repeated measures + blocked
I think my design is blocked (or split-plot?) repeated measures, but I'm having trouble getting it set up just right.
I have 5 Areas.
Each Area is composed of 3 Swaths, each with one of three ...
1
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0answers
177 views
Analyzing split-plot design in lme4 in R
I have the data from a split-plot design where A is my whole plot fixed factor with two levels and B is my subplot fixed factor with 2 levels and C is my random block factor. How do I analyse these ...
7
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1answer
688 views
Nested/SplitModel - RepeatedMeasures/MixedModel ANOVA: levels of nesting & scripting in R
My data set has the following variables:
Treatment (4 types- fixed)
Location (8 locations- fixed)
Position in Location (3 positions per location- fixed)
Samples are taken in each position (3 ...
1
vote
1answer
112 views
Nested or Split plot
I have a design with four factors
Frame (positive negative neutral)
Graphic ( graph no graph)
Color (red grey) nested in graphic
Position of color (nested in color, which is nested in graphic)
...
2
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0answers
212 views
Split-split-split plot cross-over design… is this even possible?
I'm doing statistical analysis on a psychology study I ran a short while ago, and I'm starting to think that I've designed myself into a corner.
In the study, we measured participants' pointing ...
1
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0answers
279 views
Split plot design with repeated measures in package (nlme) - model errors
Forgive me if this answer is already somewhere on this site, but after extensive searching I have found nothing to help me. Here is a brief overview of the experiment:
I have 18 tanks, each of which ...
2
votes
1answer
800 views
How to interpret an interaction effect in SPSS output for a repeated measures anova with between and within group factors?
I have conducted a repeated measures ANOVA, with 2 factors:
One between factor (Ex_control: exercise intervention versus control)
One within factor (...
1
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0answers
198 views
Building a mixed model for multi-location split plot over 2 years in SAS
For the last 3 weeks I have been reading books, papers and internet sources incl. cross validated but could not find something that would work in my case.
I have data from a split-plot field trial.
...
3
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0answers
290 views
How to choose between nested or split-plot analysis of variance?
I am having serious problems understanding the type of design I have, I would appreciate any help you can give me to understand it:
I have 324 data points, and four factors:
...
1
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0answers
209 views
Error bars calculation in a split-plot design
I have the following experimental design :
Sampling is carried out on three random sites (Factor Site is coded : Site1, Site2, Site3).
Within each site, sampling is carried out in a dry plot and in a ...
1
vote
0answers
339 views
How to determine the ANOVA table for split-plot with repeated measures experiment?
I have an experiment where observations are one of eight different treatment combinations and are then either one of two different heights. There are 4 blocks, with 8 plots for each block, and the two ...
5
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0answers
984 views
Split-split-plot design and lme
I’m working on a data set in order to evaluate the impact of drying on sediment microbial activities. The objective is to determine if the impact of drying varies among sediment types and/or depth ...
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2answers
2k views
Is a “split plot” ANOVA with two factors the same as two-way ANOVA with repeated measures in one factor?
Is a "split plot" ANOVA with two factors identical to two-way ANOVA with repeated measures in one factor? if not, what is the distinction?
4
votes
1answer
2k views
Split plot in R
I have a data set of $n$ benchmarks and $m$ subsamples in each benchmark. I run these benchmarks and their subsamples on $p$ subject machines.
The 'individual' studied by the subsamples are the same ...
9
votes
2answers
3k views
Split-Plot ANOVA: model comparison tests in R
How can I test effects in a Split-Plot ANOVA using suitable model comparisons for use with the X and M arguments of ...
4
votes
1answer
183 views
How can I treat blocks in a split plot design?
In a field experiment involving crops, what is the difference in considering block as random or otherwise as fixed factor?
As far as I understood, random means that conclusion can be extended to other ...
3
votes
1answer
641 views
Can I test the effect of Block in a split plot design in R?
I have been confused with the problem for a very long time, and hope that somebody here can help me out~
I have a experiment installed in split-plot design, with 3 temperal groups as blocks, and 2 ...
1
vote
1answer
695 views
Unbalanced repeated measure design for the given data?
I have 3 factors
factor1 (treatment) with 2 levels (control, stress)
factor2 (Variates) with 12 Levels (Var1, Var2,....Var12)
factor3 (Time) with 12 levels (Week1, Week2,..., Week12)
The treatment ...
5
votes
2answers
1k views
Omega squared for measure of effect in R?
The statistics book I am reading recommends omega squared to measure the effects of my experiments. I have already proven using a split plot design (mix of within-subjects and between-subjects design) ...
