A valued sociomatrix (Y) and matrix of nodal attributes (X) for students in community 9 of the AddHealth study.
Y: A sociomatrix in which the value of the edge corresponds to an ad-hoc measure of intensity of the relation. Note that students were only allowed to nominate up to 5 male friends and 5 female friends.
X: Matrix of students attributes, including sex, race (1=white, 2=black, 3=hispanic, 4=asian, 5=mixed/other) and grade.
data(addhealthc9)
list