#Example data for MRT with 2 arms
#  id cluster score group
#  1 1 6 0
#  2 1 2 0
#  3 1 3 1
#  4 1 3 1
#  5 2 6 0
#  6 2 10 0
#  7 2 7 1
#  8 2 6 1
#  9 3 6 0
#  10 3 5 0
#  11 3 4 1
#  12 3 4 1
#  13 4 1 0
#  14 4 8 0
#  15 4 10 1
#  16 4 -2 1
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