EXHIBIT 16

                               POWER OF ATTORNEY


      Each  person whose signature appears below hereby constitutes and appoints
the Secretary  and  Assistant  Secretaries  of  FEDERATED MDT SERIES and each of
them, their true and lawful attorneys-in-fact and  agents,  with  full  power of
substitution and resubstitution for them and in their names, place and stead, in
any and all capacities, to sign the Registration Statement on Form N-14 relating
to  the  proposed  reorganization  of Federated Technology Fund, a portfolio  of
Federated Equity Funds, into Federated MDT Small Cap Growth Fund, a portfolio of
Federated  MDT  Series,  and  any  amendments  to  the  Registration  Statement,
including post-effective amendments;  and  to  file  the same, with all exhibits
thereto  and other documents in connection therewith, with  the  Securities  and
Exchange Commission  by  means  of  the  Securities  and  Exchange  Commission's
electronic  disclosure  system  known as EDGAR, granting unto said attorneys-in-
fact and agents, and each of them,  full power and authority to sign and perform
each and every act and thing requisite  and  necessary  to be done in connection
therewith, as fully to all intents and purposes as each of  them  might or could
do  in  person,  hereby ratifying and confirming all that said attorneys-in-fact
and agents, or any  of  them,  or  their  or  his substitute or substitutes, may
lawfully do or cause to be done by virtue thereof.


SIGNATURES                           TITLE                                  DATE



/S/ John F. Donahue                                            November 15, 2007
John F. Donahue                      Trustee



/S/ J. Christopher Donahue                                     November 15, 2007
J. Christopher Donahue               President and Trustee
                                     (Principal Executive Officer)



/S/ Richard A. Novak                                           November 15, 2007
Richard A. Novak                     Treasurer
                                     (Principal Financial Officer)



/S/ Thomas G. Bigley                                           November 15, 2007
Thomas G. Bigley                     Trustee



/S/ John T. Conroy                                             November 15, 2007
John T. Conroy, Jr.                  Trustee



/S/ Nicholas P. Constantakis                                   November 15, 2007
Nicholas P. Constantakis             Trustee



/S/ John F. Cunningham                                         November 15, 2007
John F. Cunningham                   Trustee


Federated MDT Series - Power of Attorney for
Merger of Federated Technology Fund into Federated MDT Small Cap Growth Fund
Page 2




/S/ Lawrence D. Ellis, M.D.                                    November 15, 2007
Lawrence D. Ellis, M.D.              Trustee



/S/ Peter E. Madden                                            November 15, 2007
Peter E. Madden                      Trustee



/S/ Charles F. Mansfield, Jr.                                  November 15, 2007
Charles F. Mansfield, Jr.            Trustee



/S/ John E. Murray, Jr.                                        November 15, 2007
John E. Murray, Jr.                  Trustee



/S/ Thomas M. O'Neill                                          November 15, 2007
Thomas M. O'Neill                    Trustee



/S/ Marjorie P. Smuts                                          November 15, 2007
Marjorie P. Smuts                    Trustee



/S/ John S. Walsh                                              November 15, 2007
John S. Walsh                        Trustee



/S/ James F. Will                                              November 15, 2007
James F. Will                        Trustee