Re: NaN on linear regression with many categorical variables

2018-03-21 Thread ftr public
Hi, as you are a newbie first question: did you do standard multiple regression analysis with a continuous dependent and several continuous independent variables before so that you know what you get in the output window ? And how to understand it ? A first step is data cleaning. You should a

Re: NaN on linear regression with many categorical variables

2018-03-15 Thread John Darrington
Well at least that rules out any known problems with PSPP. I suggest that your next step be to run DESCRIPTIVES on that same set of variables, (both the dependent and independent) and see if there is anything interesting in that. J' On Thu, Mar 15, 2018 at 05:50:50PM +0100, Elisa Pieri wrote:

Re: NaN on linear regression with many categorical variables

2018-03-15 Thread Elisa Pieri
I did update to the 0.10.2, but still the same results :( On Thu, Mar 15, 2018 at 5:32 PM, John Darrington < j...@darrington.wattle.id.au> wrote: > On Thu, Mar 15, 2018 at 04:13:11PM +0100, Elisa Pieri wrote: > Hello, > > I'm using PSPP (psppire 0.8.5) on Linux Mint 18.3. > > This versi

Re: NaN on linear regression with many categorical variables

2018-03-15 Thread John Darrington
On Thu, Mar 15, 2018 at 04:13:11PM +0100, Elisa Pieri wrote: Hello, I'm using PSPP (psppire 0.8.5) on Linux Mint 18.3. This version is very old and there have been many fixes to the REGRESSION procedure in recent releases. I suggest that you upgrade. J' -- Avoid eavesdrop

Re: NaN on linear regression with many categorical variables

2018-03-15 Thread Dr. Walter Statistics
Dear Ms Pieri, without checking your data set it is hard to definitely say why you got these results in PSPP. My first guess is that the number of variables in the analysis leads to multicollinearity - the set of variables is linear dependent or almost linear dependent - and / or a low ratio o

NaN on linear regression with many categorical variables

2018-03-15 Thread Elisa Pieri
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 va