hello sir,
i have used the ramanathan data4-1 file which is about prices of single family home.
using Data>sample file>ramanathan>data4-1 which contain as the independent vriables and price as the dependent variable.
so i have imported the data and then i selected the
model.robust estimation>quantile regression
added price to dependent variable panel
as the independent variables.
then i have specified 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
as the tau value
and then 
i clicked on ok
but i encountered a error saying
invalid quantile specification.
why it is.pls reply me as early as possible.
thanks in advance
with regards
Kalam narendar reddy