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49G 50G STAT3.8e.hp: Multiple linear regression & Restricted model
01-17-2020, 02:25 PM (This post was last modified: 01-12-2023 02:31 PM by Gil.)
Post: #1
49G 50G STAT3.8e.hp: Multiple linear regression & Restricted model
I just integrated now, automatically, in the matrix of the results :
- the VIFs (Variance Inflation Factors) &
- the CONDITION[/i] Indexes

As always, just copy the full Directory
(without the .DOC ending) in your phone appli EMU48 and enjoy your statistical analysis.

Gil

Version 3.8 fixes the Var coeff:
- Mean of Y calculated beforehand;
- Var coeff set as infinity when mean of Y = 0.
& explains better the use of 5 CF/SF in Version 3.8e.


Attached File(s)
.doc  STAT.3.8e2.DOC (Size: 89.87 KB / Downloads: 3)
.hp  STAT.3.8e.hp (Size: 94.94 KB / Downloads: 1)
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01-17-2020, 09:53 PM (This post was last modified: 01-17-2020 09:53 PM by SammysHP.)
Post: #2
RE: HP49-50G : STAT3.3.DOC, Version 3.3 of linear regression
Thank you for your work! It might be easier to collect all posts of this tool in a single thread. Maybe a mod can merge the threads.
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01-17-2020, 10:05 PM
Post: #3
RE: HP49-50G : STAT3.3.DOC, Version 3.3 of linear regression
I agree, you are right.

I was not sure what was better: new thread for new version or old thread + reply with inclusion of new version of the former (old) program; apparently, the second option seems preferable.

Regards.

Gil
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01-18-2020, 02:48 AM
Post: #4
RE: HP49-50G : STAT3.3.DOC, Version 3.3 of linear regression
(01-17-2020 10:05 PM)Gil Wrote:  I agree, you are right.

I was not sure what was better: new thread for new version or old thread + reply with inclusion of new version of the former (old) program; apparently, the second option seems preferable.

Regards.

Gil

What seems to work best here is to extend the old thread, but also update your initial post (top of 1st page) with the latest version of the file, and any related notes about usage, changed specs., etc.

This minimizes the number of threads on the same topic, makes it easier for folks trying to find the thread on your topic, and by always updating the initial post, readers know where to find the latest files & notes without searching through the full thread.

--Bob Prosperi
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01-18-2020, 03:21 AM
Post: #5
RE: HP49-50G : STAT3.3.DOC, Version 3.3 of linear regression
Just for your information :

The programs themselves are to be found
in STAT/REG.

The documentation or notes are to be found
in STAT/NOTES.

Exact Input-Argument form for each of the 5 main programs fully explained, each time, at the beginning of the respective program (in form of a long string).
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01-19-2020, 05:57 PM (This post was last modified: 04-23-2022 09:53 AM by Gil.)
Post: #6
RE: HP49-50G : STAT3.4.DOC, Version 3.4 of linear regression
3.4 19.1.2020

Changed warning
message-levels
for colinearity:
VIF10
CONDIT.IND15&30

In last line of
RESUL of
C.REG & C.RESTR?:
[Screens 1.4&2.5]
unit ¦%¦ added
to VARIAT.COEF


Attached File(s)
.doc  STAT.3.08d.DOC (Size: 91.75 KB / Downloads: 1)
.doc  STAT.3.8e2.DOC (Size: 89.87 KB / Downloads: 1)
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01-19-2020, 08:34 PM
Post: #7
RE: HP49-50G : STAT3.3.DOC, Version 3.3 of linear regression
(01-18-2020 02:48 AM)rprosperi Wrote:  What seems to work best here is to extend the old thread, but also update your initial post (top of 1st page) with the latest version of the file, and any related notes about usage, changed specs., etc.

However, feel free to ignore that advice... Confused

--Bob Prosperi
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03-02-2020, 08:57 AM (This post was last modified: 04-21-2022 11:15 PM by Gil.)
Post: #8
RE: HP49-50G : STAT3.3.DOC, Version 3.3 of linear regression
Just changed way of calculating VIF (Variance Inflation Factors) when multiple linear regression model is without intercept (same results now as with SAS or R statistical programs).

Besides that, the structure remains the same : probabilities, t, beta, covariances, (¹/²) (partial) correlations, test on beta's and on alternative model suppressing independent X variables, (adjusted) R2, multicolinearity (condition number), anova, Spearman’s coefficient and critical values, etc.

Explanations and examples still in the downloaded file and to be read only with the calculator as they were programs by themselves.

Commentaries welcome.

Regards,
Gil


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.doc  STAT3.5.DOC (Size: 75.89 KB / Downloads: 11)
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04-16-2022, 02:15 PM (This post was last modified: 01-12-2023 01:29 PM by Gil.)
Post: #9
RE: (49G 50G): STAT3.8e.DOC, Versions d/e of linear regression
New version 3.7 with a possible error in the variable name R2mod and its location.

Version 3.8 fixes the Var coeff:
- Mean of Y calculated beforehand;
- Var coeff set as infinity when mean of Y = 0.

Regards,
Gil Campart


Attached File(s)
.doc  STAT.3.8e2.DOC (Size: 89.87 KB / Downloads: 2)
.hp  STAT.3.8e.hp (Size: 94.94 KB / Downloads: 1)
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01-12-2023, 01:31 PM
Post: #10
RE: 49G 50G STAT3.8e.DOC: Multiple linear regression & Restricted model
Version with .hp ending
(instead of the previous, confusing. DOC ending).


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.hp  STAT.3.8e.hp (Size: 94.94 KB / Downloads: 1)
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