  We have examined the radial velocity data for stars spectroscopically
observed by the Sloan Digital Sky Survey (SDSS) more than once to investigate
the incidence of spectroscopic binaries, and to evaluate the accuracy of the
SDSS stellar radial velocities. We find agreement between the fraction of stars
with significant velocity variations and the expected fraction of binary stars
in the halo and thick disk populations. The observations produce a list of 675
possible new spectroscopic binary stars and orbits for eight of them.
