TY  - BK
AU  - Coe,R.
AU  - Bellon,M.R.|Reeves,J.
TI  - Analyzing ranking and rating data from participatory on-farm trials
SN  - 970-648-096-X
U1  - 633.1553 
PY  - 2002///
CY  - Mexico, DF (Mexico)
PB  - CIMMYT
KW  - Agroforestry
KW  - Analytical methods
KW  - Crop yield
KW  - AGROVOC
KW  - Data analysis
KW  - Farmers associations
KW  - Rice
KW  - Variety trials
KW  - Soil fertility
KW  - Plant breeding
KW  - CIMMYT
N1  - Tables
N2  - Responses in participatory on-farm trials are often measured as ratings (scores on an ordered but arbitrary scale) or rankings (respondents are simply asked to order treatments). Usual analysis of variance and linear model based analyses are not appropriate for these data. Alternative analyses based on generalized linear models are described in this paper. These methods can be success.ful1y used when trial designs are irregular-a common characteristic of participatory trials-and when covariates are measured on each plot or farm in order to identify genotype x environment interaction
ER  -