# descriptions of gretl practice files: 
# first col: name of file, less the .inp extension
# second col: the theoretical topic 
# third col: nature of data set used
"greene7_8","structural instability","gasoline consumption"
"greene8_3","nonlinear model","Solow production function"
"greene11_3","nonlinear regression","income and consumption"
"greene12_1","heteroskedasticity","credit-card spending"
"greene19_1","logit and probit","economics test scores"
