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Questions related to Analyses of Variance
Please help me to get command to perform a variance components analysis in R. Actually I would to perform a variance components analysis with 4 factors on parameters in order to identify the...
11 November 2015 5,246 6 View
Even though I modify the syntax to "/EMMEANS=TABLES(Group*Time) COMPARE(Time)", I don't get the group-specific F results.
10 October 2015 3,321 4 View
06 October 2015 9,857 3 View
I am doing a regression based association study to find the association between SNPs in candidate genes and QTL of the eye. The power of the study has to be calculated wherein the total variance...
08 August 2015 6,402 1 View
I have a nested sampling design with several transects within different catchments from two different regions. When performing analysis per region, I defined transects as my sampling units and,...
07 July 2015 4,770 3 View
Dear all, One can use a mixed-model framework to estimate repeatability (R) of a trait, for example a behavioral trait. Repeatability is calculated based on the two variance components obtained...
06 June 2015 6,573 2 View
04 June 2015 4,196 2 View
I want to compare if there is significant difference between 2 or more groups (independent Variable)...the dependent variable is ordinal. i performed Chi square but its assumption of each cell not...
11 May 2015 563 6 View
05 May 2015 3,619 7 View
what is the programme used in non monotone non ignorable missing covariates in GLMM?to do multiple imputation the EM algorithm LIKELIHOOD Sensitivity Analysis?
18 March 2015 6,689 3 View
I am working on identify which explanatory variables could be interesting to add in a mechanistic model on soil carbon dynamic. I am able to calibrate a simple model on experimental data from...
03 March 2015 9,429 1 View
03 March 2015 214 4 View
In text-book statistics, one can use the one-sample t-test for comparing a population mean to a specific value. What would be the correct way to conduct a Dunnett's procedure of comparing multiple...
03 March 2015 4,226 11 View
In some problems using Analysis of Variance (ANOVA) arising in the Design of Experiments, the computed value of F-ratio like F_C = MS_C / MS_E turns out to be less than one, and it is a trivial...
02 February 2015 3,863 6 View
I have 4 groups and 3 samples each, when I apply Kruskal-wallis, the result is not my expectations, but when I logarithmic transform my data, then apply one-way anova, it greatly fit to my...
02 February 2015 8,725 9 View
Suppose we have an anova model with two factors: Populations and species. In our model, populations are the main factor and species are nested within populations. Sample sizes for each level of...
27 December 2014 1,810 10 View
12 December 2014 7,527 11 View
I have 3 Dependent Variables and 3 Independent Variables in a study. Some of my IVs are categorical and some of them are continuous. I think I need to run a higher-order factorial MANOVA instead...
11 November 2014 8,735 9 View
In a mixed design, I had two within-subjects factors (named Factor 1 and Factor 2) and one between-subjects factor (named Factor 3). Factor 1 had 15 levels, Factor 2 had 2 levels, an Factor 3 had...
11 November 2014 2,019 6 View
05 November 2014 8,213 5 View
I would like to have an SAS code for PCA analysis. I would appreciate if you could also send an example input file and output result file.
10 October 2014 6,145 4 View
I have done and experimented with CCD and based on the data I have gotten the ANOVA model indicates that the lack of fitness is not significant. using statistical software design expert when it...
09 September 2014 4,366 5 View
I know that we can consider pre-intervention amounts as covariate variable if we want to control initial differences. My question is: should these differences be statically significant or not? I...
08 August 2014 5,344 8 View
I want to know how to determine (or where to get) the critical values for the chi-square distribution when the degrees freedom are more than 100? The tables that are available for the chi-square...
07 July 2014 6,695 5 View