The Fannie Mae Mortgage originated and performace data are combined from Fennie Mae data
The data are significantly reduced and changed to new format to be used for business analytics class purpose. 
If anyone wants to access the full data, visit http://www.fanniemae.com/portal/index.html site. 
The data is as-is without any warranty.

Variables     Variable  
Included      Description
==========    ================================
orig_rt        ORIGINAL INTEREST RATE
orig_trm       ORIGINAL LOAN TERM
orig_amt       ORIGINAL LOAN AMOUNT
oltv           ORIGINAL LOAN-TO-VALUE (LTV)
ocltv          ORIGINAL COMBINED LOAN-TO-VALUE (CLTV)
num_bo         NUMBER OF BORROWERS
dti            ORIGINAL DEBT TO INCOME RATIO
cscore_b       BORROWER CREDIT SCORE AT ORIGINATION
num_unit       NUMBER OF UNITS
orgyear        ORGINATE YEAR
delinq         HIGHER THAN 30 DAYS DELINQUENCY
fstimebuyer    FIRST TIME HOME BUYER INDICATOR
occ_stat       OCCUPANCY TYPE
               • P = Principal
               • S = Second
               • I = Investo

purpose
       	       • P = Purchase
               • C = Cash-out Refinance
               • R = No Cash-out Refinance

relo_flg       RELOCATION MORTGAGE INDICATOR
state	       LOAN ORIGINATED IN