Censored regression Tobit - Forecast. Error Message
Posted: Fri Nov 17, 2017 1:45 pm
Hello.
I need to estimate newspaper demand and have therefore made a tobit regression based historical sales. The regression is left censored when it is holiday (since 0 sales) and right censored by a dummy when sales = the delivered quantity for the specific day. However, the estimation of the regression model is fine, but I need to estimate forecast and when I try to I receive the error message "Unable to compute due to missing data" and if I reduce the forecast sample I get the error message "Error in Sample: Range Error."
How can I estimate a forecast of newspaper demand? I added the file in case it is easier to have a look.
I hope someone might know how to do it, any suggestion would be very much appreciated.
Have a great day!
Best regards,
Kari
I need to estimate newspaper demand and have therefore made a tobit regression based historical sales. The regression is left censored when it is holiday (since 0 sales) and right censored by a dummy when sales = the delivered quantity for the specific day. However, the estimation of the regression model is fine, but I need to estimate forecast and when I try to I receive the error message "Unable to compute due to missing data" and if I reduce the forecast sample I get the error message "Error in Sample: Range Error."
How can I estimate a forecast of newspaper demand? I added the file in case it is easier to have a look.
I hope someone might know how to do it, any suggestion would be very much appreciated.
Have a great day!
Best regards,
Kari