Voting data from the 1987 British general election, cross-classified by the class of the head of household and the class of their father.
A data frame with 25 observations on the following 4 variables.
the percentage of the cell voting Labour.
the cell count.
a factor describing the father's class with
a factor describing the head of
household's class with levels
Clifford, P. and Heath, A. F. (1993) The Political Consequences of Social Mobility. J. Roy. Stat. Soc. A, 156(1), 51-61.
### Examples from Clifford and Heath paper ### (Results differ slightly - possible transcription error in ### published data?) set.seed(1) ## reconstruct counts voting Labour/non-Labour count <- with(voting, percentage/100 * total) yvar <- cbind(count, voting$total - count) ## fit diagonal reference model with constant weights classMobility <- gnm(yvar ~ -1 + Dref(origin, destination), family = binomial, data = voting) DrefWeights(classMobility) ## create factors indicating movement in and out of salariat (class 1) upward <- with(voting, origin != 1 & destination == 1) downward <- with(voting, origin == 1 & destination != 1) ## fit separate weights for the "socially mobile" groups socialMobility <- gnm(yvar ~ -1 + Dref(origin, destination, delta = ~ 1 + downward + upward), family = binomial, data = voting) DrefWeights(socialMobility) ## fit separate weights for downwardly mobile groups only downwardMobility <- gnm(yvar ~ -1 + Dref(origin, destination, delta = ~ 1 + downward), family = binomial, data = voting) DrefWeights(downwardMobility)
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