Hello, I'm using PSPP (psppire 0.8.5) on Linux Mint 18.3.
Premise: I'm a big newbie in statistical analysis, so please be patient :) I have a data set with 23 categorical variables (binary values 0/1) and a continuous variable. I would like to calculate linear regression, using the continuous variable as the dependent one, to understand which ones have the strongest impact. The syntax that I'm using is: REGRESSION /VARIABLES= GLU4 HIS8 HIS21 GLU36 ASP57 LYS60 GLU62 HIS69 ASP75 LYS96 LYS97 ASP98 ASP120 GLU123 ASP125 LYS153 GLU160 ASP166 LYS167 ASP198 ASP217 HIS219 ASP226 /DEPENDENT= Energy /STATISTICS=COEFF R ANOVA. When I try to use less than 10 variables, the analysis works, but when I use all of them I get a lot of Nan: Model Summary (Energy) #====#========#=================#==========================# # R #R Square|Adjusted R Square|Std. Error of the Estimate# ##===#========#=================#==========================# #|NaN# NaN| NaN| NaN# ##===#========#=================#==========================# ANOVA (Energy) #===========#==============#=====#===========#===#====# # #Sum of Squares| df |Mean Square| F |Sig.# ##==========#==============#=====#===========#===#====# #|Regression# NaN| 23| NaN|NaN| NaN# #|Residual # NaN|39976| NaN| | # #|Total # 499,89|39999| | | # ##==========#==============#=====#===========#===#====# Coefficients (Energy) #===========#============================#=========================#===#====# # # Unstandardized Coefficients|Standardized Coefficients| | # #| #-----------+----------------+-------------------------+ | # #| # B | Std. Error | Beta | t |Sig.# ##==========#===========#================#=========================#===#====# #|(Constant)# NaN| NaN| ,00|NaN| NaN# #|GLU4 # NaN| NaN| NaN|NaN| NaN# #|HIS8 # NaN| NaN| NaN|NaN| NaN# #|HIS21 # NaN| NaN| NaN|NaN| NaN# #|GLU36 # NaN| NaN| NaN|NaN| NaN# #|ASP57 # NaN| NaN| NaN|NaN| NaN# #|LYS60 # NaN| NaN| NaN|NaN| NaN# #|GLU62 # NaN| NaN| NaN|NaN| NaN# #|HIS69 # NaN| NaN| NaN|NaN| NaN# #|ASP75 # NaN| NaN| NaN|NaN| NaN# #|LYS96 # -,01| NaN| -,01|NaN| NaN# #|LYS97 # ,50| NaN| ,40|NaN| NaN# #|ASP98 # ,00| NaN| -,01|NaN| NaN# #|ASP120 # ,12| NaN| ,01|NaN| NaN# #|GLU123 # ,02| NaN| ,04|NaN| NaN# #|ASP125 # ,00| NaN| -,01|NaN| NaN# #|LYS153 # ,00| NaN| ,01|NaN| NaN# #|GLU160 # -,02| NaN| -,01|NaN| NaN# #|ASP166 # -,02| NaN| ,00|NaN| NaN# #|LYS167 # ,00| NaN| ,00|NaN| NaN# #|ASP198 # ,00| NaN| ,00|NaN| NaN# #|ASP217 # -,04| NaN| -,11|NaN| NaN# #|HIS219 # ,02| NaN| ,08|NaN| NaN# #|ASP226 # ,00| NaN| ,00|NaN| NaN# ##==========#===========#================#=========================#===#====# Is there a kind soul amongst you that would explain to me what is going on? Thank you very much in advance. Elisa
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