Holding that statistics that "did not demonstrate that women received grade increases less often than men as a regular occurrence" failed to establish disparate impact
Holding that to be continuing, the discrimination may not be limited to isolated incidents, but must pervade a series or pattern of events which continue into the filing period
Holding that three denied promotions over the course of three years, where the decisions were made by three different selection officials and involved different qualifications were not sufficiently related to constitute a continuing violation