Calendar 1922
ALLOCATE 1941:1

****   You can open a text file.
OPEN DATA FOODDATA.DAT
DATA(FORMAT=FREE,ORG=OBS) / FOODCONS PRRETAIL DISPINC FOODPROD PRFARM

****   You can open an excel file.
OPEN DATA FOODDATA.XLS
DATA(FORMAT=XLS,ORG=OBS)


SET TREND = T
SET AVGPRICES = (PRFARM+PRFARM{1})/2.0
LINREG FOODCONS
# CONSTANT PRRETAIL DISPINC TREND
LINREG FOODPROD
# CONSTANT AVGPRICES
*
LINREG FOODCONS
# CONSTANT PRRETAIL DISPINC{0 1}
EXCLUDE
# DISPINC{0 1}
*
SET LOGCONSUMP = LOG(FOODCONS)
SET LOGINCOME = LOG(DISPINC)
SET LOGPRICE = LOG(PRRETAIL)
LINREG LOGCONSUMP
# CONSTANT LOGPRICE LOGINCOME
TEST
# 2
# -1.0
TEST
# 3
# 1.0