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I am directing a study of upgrading information about the trees in the public space of the Partido de Morón, Provincia de Buenos Aires, Argentina.
Between the years 2005 and 2008 a group of professors and students of the catedra of "Floricultura" did a census of trees in the public space. For each of the trees (aproximately 100000 plants) they recorded the date of evaluation, the Genus and species, the common name, and several cuantitative and cualitative variables.
In the year 2013 and the first trimester of 2014 we did a random sample of 100 blocks in the same population. We registered for each individual tree, any change in the information between the census and the random sample. There are aproximately 5000 plants in the random sample.
We get a data base where we have for each tree, its information in each variable (quali or cuantitative) in the two dates.
The purpose of our study is to produce an upgrading of the information of the census for March of 2014.
We are using ratio and regresion estimators, and post-stratified estimators but would like consider any suggestions of you for obtaining the more reliable estimator of each variable of this population. We want to take in consideration, the time between the observations.
Thank you, in advance for any help!.
Hello, what method would you use to analyse the effect of a specific genotype (wt/wt, wt/vt or vt/vt) on the phenotype (cuantitative).
I've thought of using one factor ANOVA however I want to be sure this is the correct method before starting the analysis.
Thank you in advance.