Linear Regression Outputs Question Marks

DataDan

I am new to rapid miner and using some simple data to play around and slowly learn it.  I am using a dataset of local housing sales from 2012 as the "learning" input.  I loaded the data and filtered out all of the missing examples.  I set the RMV (Real Market Value) to the Label and the ID (Just a count of 1 to N) as the ID.  Everything runs fine without any errors popping up but the Linear Regression output looks like the following


- ? * Situs_City = ALBANY
- ? * Situs_City = MONROE
- ? * Situs_City = PHILOMATH
- ? * Situs_City = CORVALLIS
- ? * Situs_City = ALSEA
- ? * Situs_City = BLODGETT
- ? * Situs_City = MONMOUTH
- ? * Situs_City = JUNCTION CITY
- ? * Improvement Class = Mobile Home
- ? * Improvement Class = Dwelling
- ? * Improvement Class = Commercial
- ? * Improvement Class = Outbuilding
- ? * Improvement Class = RES Feature
- ? * Acres
- ? * Yr_Blt
- ? * Tot SF
- ? * TotFinSF
- ? * MainSF
- ? * SecondSF
- ? * AttFin
- ? * BR
- ? * FBath
- ? * HBath
- ? * AttGar SF
- ? * DetGar SF
- ? * Carport_SF
- ?

The table view looks the same just a bunch of ?'s everywhere.  I am not sure what is going on as I have run this same dataset in R, SPSS, SAS, STATA and they all run basic linear regression without issue but for some reason RapidMiner is not playing well and I can't figure out why.

DataDan

I tried running this as a Polynomial Regression and it ran, and gave output but when I went back to Linear it still just reports ?'s as the output.