I'm having an issue squaring my X variable to create a new variable... I don't know where to place this transformation statement, or exactly what it should be. Here is my best guess so far, but it keeps telling me "Variable X2 is not found."   ... View more

I'm having an issuing adding a "lackfit" statement to a proc regression model... I keep getting a "0" answer for my Pure Error Sum of Squares value, which I don't think is correct. If my data set has 3 X variables, is the lackfit statement still functional?    Obs CITY Y X1 X2 X3 1 1 11.2 587 16.5 6.2 2 2 13.4 643 20.5 6.4 3 3 40.7 635 26.3 9.3 4 4 5.3 692 16.5 5.3 5 5 24.8 1248 19.2 7.3 6 6 12.7 643 16.5 5.9 7 7 20.9 1964 20.2 6.4 8 8 35.7 1531 21.3 7.6 9 9 8.7 713 17.2 4.9 10 10 9.6 749 14.3 6.4 11 11 14.5 7895 18.1 6 12 12 26.9 762 23.1 7.4 13 13 15.7 2793 19.1 5.8 14 14 36.2 741 24.7 8.6 15 15 18.1 625 18.6 6.5 16 16 28.9 854 24.9 8.3 17 17 14.9 716 17.9 6.7 18 18 25.8 921 22.4 8.6 19 19 21.7 595 20.2 8.4 20 20 25.7 3353 16.9 6.7 ... View more

I'm working with the SAS University Edition, and I'm having trouble creating a scatter plot from a dataset with three X variables. It seems like this should be really simple, but I can only seem to add one X value. I have a homework assignment where my instructor asked us to "Plot the observed data and the two fitted regressions on one plot (this is probably easiest done by hand over a scatterplot of the data)." Here is the data set:    Obs CITY Y X1 X2 X3 1 1 11.2 587 16.5 6.2 2 2 13.4 643 20.5 6.4 3 3 40.7 635 26.3 9.3 4 4 5.3 692 16.5 5.3 5 5 24.8 1248 19.2 7.3 6 6 12.7 643 16.5 5.9 7 7 20.9 1964 20.2 6.4 8 8 35.7 1531 21.3 7.6 9 9 8.7 713 17.2 4.9 10 10 9.6 749 14.3 6.4 11 11 14.5 7895 18.1 6 12 12 26.9 762 23.1 7.4 13 13 15.7 2793 19.1 5.8 14 14 36.2 741 24.7 8.6 15 15 18.1 625 18.6 6.5 16 16 28.9 854 24.9 8.3 17 17 14.9 716 17.9 6.7 18 18 25.8 921 22.4 8.6 19 19 21.7 595 20.2 8.4 20 20 25.7 3353 16.9 6.7 ... View more

I accidentally downloaded the wrong software for an intro biostatistics course.... I have the free SAS University Edition, but all the codes my professor uses is for SAS 9.4. Is there an easier to get this version aside from uninstalling SAS University Edition and then installing the SAS 9.4? Or is there a way to convert codes from SAS 9.4 to ones usable in SAS University Edition?  ... View more