Discussion:
compare means layers
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Dana Williams
2017-03-06 16:06:26 UTC
Permalink
Some of my Stats students were following along on PSPP as I demonstrated
using the compare means function on SPSS (descriptive, not t or F). All
of this is through the GUI (for both SPSS and PSPP). When adding a
second layer in SPSS, the independent variable is nested with the first
IV, in a single output table. However, in PSPPIRE, using the layer tool
separates the layers into separate tables, but adding multiple IVs into
a single layer combines (and nests) them together. The functionality of
PSPPIRE's layer tool seems opposite of SPSS's. Is that correct or am I
missing something?

Thanks for anyone's insight,
Dana
--
Dana Williams, Ph.D.
Assistant Professor
Department of Sociology
California State University, Chico
John Darrington
2017-03-07 14:23:52 UTC
Permalink
On Mon, Mar 06, 2017 at 08:06:26AM -0800, Dana Williams wrote:
Some of my Stats students were following along on PSPP as I demonstrated
using the compare means function on SPSS (descriptive, not t or F). All
of this is through the GUI (for both SPSS and PSPP). When adding a
second layer in SPSS, the independent variable is nested with the first
IV, in a single output table. However, in PSPPIRE, using the layer tool
separates the layers into separate tables, but adding multiple IVs into
a single layer combines (and nests) them together. The functionality of
PSPPIRE's layer tool seems opposite of SPSS's. Is that correct or am I
missing something?


No I don't think you're missing anything. I number of those people have
complained about the same issue.

If someone can provide a detailed description with diagrams about how these
dialogs could be improved then maybe it could be considered for a future
release.

J'
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Williams, Dana
2017-09-08 00:46:45 UTC
Permalink
Dear John,

Sorry it's taken awhile for me to respond with more details about this
bug. I think the inconsistency between PSPP and SPSS originates in the
MEANS syntax command (not PSPPIRE like I originally thought),
specifically the placement/presence of the BY subcommand. I wonder if
the PSPPIRE dialogs could be left alone if the syntax [sub]commands
behind them were reversed. Anyway, here's an attachment with screenshots
of the inconsistent output from both programs. Hope this helps. Congrats
on the release  of v1.0, btw!

Dana
Post by Dana Williams
Some of my Stats students were following along on PSPP as I demonstrated
using the compare means function on SPSS (descriptive, not t or F). All
of this is through the GUI (for both SPSS and PSPP). When adding a
second layer in SPSS, the independent variable is nested with the first
IV, in a single output table. However, in PSPPIRE, using the layer tool
separates the layers into separate tables, but adding multiple IVs into
a single layer combines (and nests) them together. The functionality of
PSPPIRE's layer tool seems opposite of SPSS's. Is that correct or am I
missing something?
No I don't think you're missing anything. I number of those people have
complained about the same issue.
If someone can provide a detailed description with diagrams about how these
dialogs could be improved then maybe it could be considered for a future
release.
J'
--
Dana Williams, Ph.D.
Associate Professor
Department of Sociology
California State University, Chico
John Darrington
2017-09-10 05:35:49 UTC
Permalink
Thanks for the update. Would you be able to share the data file you used
to prepare these examples dmwilliams/Dropbox/random_data.sav ?

J'

On Thu, Sep 07, 2017 at 05:46:45PM -0700, Williams, Dana wrote:
Dear John,

Sorry it's taken awhile for me to respond with more details about this
bug. I think the inconsistency between PSPP and SPSS originates in the
MEANS syntax command (not PSPPIRE like I originally thought),
specifically the placement/presence of the BY subcommand. I wonder if the
PSPPIRE dialogs could be left alone if the syntax [sub]commands behind
them were reversed. Anyway, here's an attachment with screenshots of the
inconsistent output from both programs. Hope this helps. Congrats on the
release? of v1.0, btw!

Dana
Post by Dana Williams
Some of my Stats students were following along on PSPP as I demonstrated
using the compare means function on SPSS (descriptive, not t or F). All
of this is through the GUI (for both SPSS and PSPP). When adding a
second layer in SPSS, the independent variable is nested with the first
IV, in a single output table. However, in PSPPIRE, using the layer tool
separates the layers into separate tables, but adding multiple IVs into
a single layer combines (and nests) them together. The functionality of
PSPPIRE's layer tool seems opposite of SPSS's. Is that correct or am I
missing something?
No I don't think you're missing anything. I number of those people have
complained about the same issue.
If someone can provide a detailed description with diagrams about how these
dialogs could be improved then maybe it could be considered for a future
release.
J'
--
Dana Williams, Ph.D.
Associate Professor
Department of Sociology
California State University, Chico
--
Avoid eavesdropping. Send strong encrypted email.
PGP Public key ID: 1024D/2DE827B3
fingerprint = 8797 A26D 0854 2EAB 0285 A290 8A67 719C 2DE8 27B3
See http://sks-keyservers.net or any PGP keyserver for public key.
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