SPSSX Discussion

Inverse NonCentral t-Distribution

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MaxJasper

Inverse NonCentral t-Distribution

Hello folks,

I am looking for a SPSS sys code for Inverse NonCentral t-Distribution using SPSS functions. Appreciate with many thanks.

Regards,

Max.

David Marso

Re: Inverse NonCentral t-Distribution

Administrator

AFAIK It doesn't exist in the available built in functions.
Looks like you'll need to build an iterative solution with NCDF.T as a check point.
This came up on one of the LinkedIn groups recently.
Please post back whatever you come up with.
--

MaxJasper wrote

Hello folks,

I am looking for a SPSS sys code for Inverse NonCentral t-Distribution using SPSS functions. Appreciate with many thanks.

Regards,

Max.

Please reply to the list and not to my personal email.
Those desiring my consulting or training services please feel free to email me.
---
"Nolite dare sanctum canibus neque mittatis margaritas vestras ante porcos ne forte conculcent eas pedibus suis."
Cum es damnatorum possederunt porcos iens ut salire off sanguinum cliff in abyssum?"

MaxJasper

Re: Inverse NonCentral t-Distribution

I was hoping that by version 22 of SPSS these inverse PDF or CDF functions be included in SPSS functions but alas not yet!

Max.

From: David Marso [via SPSSX Discussion] [mailto:[hidden email]]
Sent: 2013-Nov-10 20:11
To: MaxJasper
Subject: Re: Inverse NonCentral t-Distribution

MaxJasper wrote
Hello folks,

I am looking for a SPSS sys code for Inverse NonCentral t-Distribution using SPSS functions. Appreciate with many thanks.

Regards,

Max.

If you reply to this email, your message will be added to the discussion below:

http://spssx-discussion.1045642.n5.nabble.com/Inverse-NonCentral-t-Distribution-tp5722971p5722972.html

To start a new topic under SPSSX Discussion, email [hidden email]
To unsubscribe from SPSSX Discussion, click here.
NAML

Jon K Peck

Re: Inverse NonCentral t-Distribution

AFAIK, no one has requested this until now. I suggest that you post this request to [hidden email].

What is it that you actually want to compute this for?

Jon Peck (no "h") aka Kim
Senior Software Engineer, IBM
[hidden email]
phone: 720-342-5621

From: MaxJasper <[hidden email]>
To: [hidden email],
Date: 11/10/2013 09:32 PM
Subject: Re: [SPSSX-L] Inverse NonCentral t-Distribution
Sent by: "SPSSX(r) Discussion" <[hidden email]>

I was hoping that by version 22 of SPSS these inverse PDF or CDF functions be included in SPSS functions but alas not yet!

Max.

From: David Marso [via SPSSX Discussion] [[hidden email]]
Sent: 2013-Nov-10 20:11
To: MaxJasper
Subject: Re: Inverse NonCentral t-Distribution

AFAIK It doesn't exist in the available built in functions.
Looks like you'll need to build an iterative solution with NCDF.T as a check point.
This came up on one of the LinkedIn groups recently.
Please post back whatever you come up with.
--
MaxJasper wrote
Hello folks,

I am looking for a SPSS sys code for Inverse NonCentral t-Distribution using SPSS functions. Appreciate with many thanks.

Regards,

Max.
Please reply to the list and not to my personal email.
Those desiring my consulting or training services please feel free to email me.
---
"Nolite dare sanctum canibus neque mittatis margaritas vestras ante porcos ne forte conculcent eas pedibus suis."
Cum es damnatorum possederunt porcos iens ut salire off sanguinum cliff in abyssum?"

If you reply to this email, your message will be added to the discussion below:
http://spssx-discussion.1045642.n5.nabble.com/Inverse-NonCentral-t-Distribution-tp5722971p5722972.html
To start a new topic under SPSSX Discussion, email [hidden email]
To unsubscribe from SPSSX Discussion, click here.
NAML

MaxJasper

RE: Inverse NonCentral t-Distribution

Hi Jon,

Inverse NonCentral t-Distribution is used to calculate one-sided upper/lower tolerance limits of normal distributions.

Inverse NonCentral Chi-Square distribution is used to calculate two-sided tolerance intervals of normal distributions.

Please take a look at Mathematica 9 function InverseCDF[any distribution function].

Re.: Handbook of Statistical Distributions with Applications, 10.6 (Krishnamoorrthy 2009 Chapman & Hall/CRC, ISBN=1584886358)

Thanks,

Max.

From: Jon K Peck [via SPSSX Discussion] [mailto:[hidden email]]
Sent: 2013-Nov-11 07:11
To: MaxJasper
Subject: Re: Inverse NonCentral t-Distribution

If you reply to this email, your message will be added to the discussion below:

http://spssx-discussion.1045642.n5.nabble.com/Inverse-NonCentral-t-Distribution-tp5722971p5722975.html

To start a new topic under SPSSX Discussion, email [hidden email]
To unsubscribe from SPSSX Discussion, click here.
NAML

Jon K Peck

Re: Inverse NonCentral t-Distribution

Thanks. You can get approximate tolerance limits without the inverse noncentral functions. Do you have an idea of how approximate these are? NIST says that unless you have very small samples - N <=10, the approximations "should not have much practical effect".

Jon Peck (no "h") aka Kim
Senior Software Engineer, IBM
[hidden email]
phone: 720-342-5621

From: MaxJasper <[hidden email]>
To: [hidden email],
Date: 11/11/2013 10:12 AM
Subject: Re: [SPSSX-L] Inverse NonCentral t-Distribution
Sent by: "SPSSX(r) Discussion" <[hidden email]>

Hi Jon,

Inverse NonCentral t-Distribution is used to calculate one-sided upper/lower tolerance limits of normal distributions.

Inverse NonCentral Chi-Square distribution is used to calculate two-sided tolerance intervals of normal distributions.

Please take a look at Mathematica 9 function InverseCDF[any distribution function].

Re.: Handbook of Statistical Distributions with Applications, 10.6 (Krishnamoorrthy 2009 Chapman & Hall/CRC, ISBN=1584886358)

Thanks,

Max.

From: Jon K Peck [via SPSSX Discussion] [mailto:[hidden email]]
Sent: 2013-Nov-11 07:11
To: MaxJasper
Subject: Re: Inverse NonCentral t-Distribution

If you reply to this email, your message will be added to the discussion below:
click here.
NAML

View this message in context: RE: Inverse NonCentral t-Distribution
Sent from the SPSSX Discussion mailing list archive at Nabble.com.

MaxJasper

Re: Inverse NonCentral t-Distribution

Hi Jon,

Thanks for your comments. I need inverse values of distribution functions in many med stat fields mostly to be not worried of df or sample size and usually in this field one has limited samples sizes so the most accurate inverse values are needed.

I am hoping this deficiency be addressed in SPSS 22 update.

Regards,

Max.

From: Jon K Peck [mailto:[hidden email]]
Sent: 2013-Nov-11 11:05
To: MaxJasper
Cc: [hidden email]
Subject: Re: [SPSSX-L] Inverse NonCentral t-Distribution

Hi Jon,

Inverse NonCentral t-Distribution is used to calculate one-sided upper/lower tolerance limits of normal distributions.

Inverse NonCentral Chi-Square distribution is used to calculate two-sided tolerance intervals of normal distributions.

Please take a look at Mathematica 9 function InverseCDF[any distribution function].

Re.: Handbook of Statistical Distributions with Applications, 10.6 (Krishnamoorrthy 2009 Chapman & Hall/CRC, ISBN=1584886358)

Thanks,

Max.

From: Jon K Peck [via SPSSX Discussion] [mailto:[hidden email]]
Sent: 2013-Nov-11 07:11
To: MaxJasper
Subject: Re: Inverse NonCentral t-Distribution

If you reply to this email, your message will be added to the discussion below:
click here.
NAML

View this message in context: RE: Inverse NonCentral t-Distribution
Sent from the SPSSX Discussion mailing list archive at Nabble.com.

MaxJasper

Re: Inverse NonCentral t-Distribution

Hi Jon,

I was very much hoping to see SPSS stat functions reach the level of Mathematica functions so that for such functions there would be no need to export SPSS data & leave SPSS. If you remember, SPSS even did not have any of the noncentral distributions until recently! I guess the executives of that era were more enlightened scientifically!

Regards,

Max.

MedStat.

From: Jon K Peck [mailto:[hidden email]]
Sent: 2013-Nov-11 15:38
To: [hidden email]
Subject: RE: [SPSSX-L] Inverse NonCentral t-Distribution

Max,

Calculating those particular functions is difficult, and there are several different numerical methods that have been suggested that vary in accuracy and in which parts of the distribution are most/least accurate. We cannot add functionality in a fixpack (with very rare exceptions requiring approval from lots of IBM executives). The most we might be able to do in the short run would be to wrap the relevant R functions. They could create a new Statistics dataset containing the specified values.

Jon Peck (no "h") aka Kim
Senior Software Engineer, IBM
[hidden email]
phone: 720-342-5621

From: "MaxJasper" <[hidden email]>
To: <[hidden email]>,
Date: 11/11/2013 11:50 AM
Subject: RE: [SPSSX-L] Inverse NonCentral t-Distribution

Hi Jon,

Thanks for your comments. I need inverse values of distribution functions in many med stat fields mostly to be not worried of df or sample size and usually in this field one has limited samples sizes so the most accurate inverse values are needed.

I am hoping this deficiency be addressed in SPSS 22 update.

Regards,
Max.

From: Jon K Peck [[hidden email]]
Sent: 2013-Nov-11 11:05
To: MaxJasper
Cc: [hidden email]
Subject: Re: [SPSSX-L] Inverse NonCentral t-Distribution

Thanks. You can get approximate tolerance limits without the inverse noncentral functions. Do you have an idea of how approximate these are? NIST says that unless you have very small samples - N <=10, the approximations "should not have much practical effect".

Jon Peck (no "h") aka Kim
Senior Software Engineer, IBM
[hidden email]
phone: 720-342-5621

From: MaxJasper <[hidden email]>
To: [hidden email],
Date: 11/11/2013 10:12 AM
Subject: Re: [SPSSX-L] Inverse NonCentral t-Distribution
Sent by: "SPSSX(r) Discussion" <[hidden email]>

Hi Jon,

Inverse NonCentral t-Distribution is used to calculate one-sided upper/lower tolerance limits of normal distributions.

Inverse NonCentral Chi-Square distribution is used to calculate two-sided tolerance intervals of normal distributions.

Please take a look at Mathematica 9 function InverseCDF[any distribution function].

Re.: Handbook of Statistical Distributions with Applications, 10.6 (Krishnamoorrthy 2009 Chapman & Hall/CRC, ISBN=1584886358)

Thanks,

Max.

From: Jon K Peck [via SPSSX Discussion] [mailto:[hidden email]]
Sent: 2013-Nov-11 07:11
To: MaxJasper
Subject: Re: Inverse NonCentral t-Distribution

If you reply to this email, your message will be added to the discussion below:
click here.
NAML

View this message in context: RE: Inverse NonCentral t-Distribution
Sent from the SPSSX Discussion mailing list archive at Nabble.com.

Jon K Peck

Re: Inverse NonCentral t-Distribution

The noncentral distributions have been in Statistics for many years - more than ten IIRC. The issue of adding more functions is not about scientific enlightenment.

Jon Peck (no "h") aka Kim
Senior Software Engineer, IBM
[hidden email]
phone: 720-342-5621

From: "MaxJasper" <[hidden email]>
To: <[hidden email]>,
Date: 11/11/2013 04:17 PM
Subject: RE: [SPSSX-L] Inverse NonCentral t-Distribution

Hi Jon,

I was very much hoping to see SPSS stat functions reach the level of Mathematica functions so that for such functions there would be no need to export SPSS data & leave SPSS. If you remember, SPSS even did not have any of the noncentral distributions until recently! I guess the executives of that era were more enlightened scientifically!

Regards,
Max.
MedStat.

From: Jon K Peck [mailto:peck@...]
Sent: 2013-Nov-11 15:38
To: [hidden email]
Subject: RE: [SPSSX-L] Inverse NonCentral t-Distribution

Max,

Calculating those particular functions is difficult, and there are several different numerical methods that have been suggested that vary in accuracy and in which parts of the distribution are most/least accurate. We cannot add functionality in a fixpack (with very rare exceptions requiring approval from lots of IBM executives). The most we might be able to do in the short run would be to wrap the relevant R functions. They could create a new Statistics dataset containing the specified values.

Jon Peck (no "h") aka Kim
Senior Software Engineer, IBM
peck@...
phone: 720-342-5621

From: "MaxJasper" <MaxJasper@...>
To: <[hidden email]>,
Date: 11/11/2013 11:50 AM
Subject: RE: [SPSSX-L] Inverse NonCentral t-Distribution

Hi Jon,

Thanks for your comments. I need inverse values of distribution functions in many med stat fields mostly to be not worried of df or sample size and usually in this field one has limited samples sizes so the most accurate inverse values are needed.

I am hoping this deficiency be addressed in SPSS 22 update.

Regards,
Max.

From: Jon K Peck [mailto:peck@...]
Sent: 2013-Nov-11 11:05
To: MaxJasper
Cc: [hidden email]
Subject: Re: [SPSSX-L] Inverse NonCentral t-Distribution

Thanks. You can get approximate tolerance limits without the inverse noncentral functions. Do you have an idea of how approximate these are? NIST says that unless you have very small samples - N <=10, the approximations "should not have much practical effect".

Jon Peck (no "h") aka Kim
Senior Software Engineer, IBM
peck@...
phone: 720-342-5621

From: MaxJasper <maxjasper@...>
To: [hidden email],
Date: 11/11/2013 10:12 AM
Subject: Re: [SPSSX-L] Inverse NonCentral t-Distribution
Sent by: "SPSSX(r) Discussion" <[hidden email]>

Hi Jon,

Inverse NonCentral t-Distribution is used to calculate one-sided upper/lower tolerance limits of normal distributions.

Inverse NonCentral Chi-Square distribution is used to calculate two-sided tolerance intervals of normal distributions.

Please take a look at Mathematica 9 function InverseCDF[any distribution function].

Re.: Handbook of Statistical Distributions with Applications, 10.6 (Krishnamoorrthy 2009 Chapman & Hall/CRC, ISBN=1584886358)

Thanks,

Max.

From: Jon K Peck [via SPSSX Discussion] [mailto:[hidden email]]
Sent: 2013-Nov-11 07:11
To: MaxJasper
Subject: Re: Inverse NonCentral t-Distribution

If you reply to this email, your message will be added to the discussion below:
click here.
NAML

View this message in context: RE: Inverse NonCentral t-Distribution
Sent from the SPSSX Discussion mailing list archive at Nabble.com.

David Marso

Re: Inverse NonCentral t-Distribution

Administrator

This post was updated on .

I just fired up good old reliable (11.5) and NCDF.x and CNPF.x exist for beta, t, F and Chi2
I acquired this early 2003.

NCDF Noncentral cumulative distribution function.
A noncentral distribution function NCDF.d_spec(q,a,b,...) returns a probability p that a variate with the
specified noncentral distribution falls below q. It is available only for beta,
chi-square, F, and Student’s t.
NPDF Noncentral probability density function. A noncentral probability density
function NCDF.d_spec(q,a,b,...) returns the density of the specified distribu-
tion (d_spec) at q. It is available only for beta, chi-square, F, and Student’s t.

One solution for Max might be to see if R or Python support the Inv NCDF.T?
Another is to explore whether one can call into Mathematica either via Com or Python bindings?
--

Jon K Peck wrote

The noncentral distributions have been in Statistics for many years - more
than ten IIRC. The issue of adding more functions is not about scientific
enlightenment.

Jon Peck (no "h") aka Kim
Senior Software Engineer, IBM
[hidden email]
phone: 720-342-5621

From: "MaxJasper" <[hidden email]>
To: <[hidden email]>,
Date: 11/11/2013 04:17 PM
Subject: RE: [SPSSX-L] Inverse NonCentral t-Distribution

Hi Jon,

I was very much hoping to see SPSS stat functions reach the level of
Mathematica functions so that for such functions there would be no need to
export SPSS data & leave SPSS. If you remember, SPSS even did not have any
of the noncentral distributions until recently! I guess the executives of
that era were more enlightened scientifically!

Regards,
Max.
MedStat.

From: Jon K Peck [mailto:[hidden email]]
Sent: 2013-Nov-11 15:38
To: [hidden email]
Subject: RE: [SPSSX-L] Inverse NonCentral t-Distribution

Max,

Calculating those particular functions is difficult, and there are several
different numerical methods that have been suggested that vary in accuracy
and in which parts of the distribution are most/least accurate. We cannot
add functionality in a fixpack (with very rare exceptions requiring
approval from lots of IBM executives). The most we might be able to do in
the short run would be to wrap the relevant R functions. They could
create a new Statistics dataset containing the specified values.

Jon Peck (no "h") aka Kim
Senior Software Engineer, IBM
[hidden email]
phone: 720-342-5621

From: "MaxJasper" <[hidden email]>
To: <[hidden email]>,
Date: 11/11/2013 11:50 AM
Subject: RE: [SPSSX-L] Inverse NonCentral t-Distribution

Hi Jon,

Thanks for your comments. I need inverse values of distribution functions
in many med stat fields mostly to be not worried of df or sample size and
usually in this field one has limited samples sizes so the most accurate
inverse values are needed.

I am hoping this deficiency be addressed in SPSS 22 update.

Regards,
Max.

From: Jon K Peck [mailto:[hidden email]]
Sent: 2013-Nov-11 11:05
To: MaxJasper
Cc: [hidden email]
Subject: Re: [SPSSX-L] Inverse NonCentral t-Distribution

Thanks. You can get approximate tolerance limits without the inverse
noncentral functions. Do you have an idea of how approximate these are?
NIST says that unless you have very small samples - N <=10, the
approximations "should not have much practical effect".

Jon Peck (no "h") aka Kim
Senior Software Engineer, IBM
[hidden email]
phone: 720-342-5621

From: MaxJasper <[hidden email]>
To: [hidden email],
Date: 11/11/2013 10:12 AM
Subject: Re: [SPSSX-L] Inverse NonCentral t-Distribution
Sent by: "SPSSX(r) Discussion" <[hidden email]>

Hi Jon,

Inverse NonCentral t-Distribution is used to calculate one-sided
upper/lower tolerance limits of normal distributions.

Inverse NonCentral Chi-Square distribution is used to calculate two-sided
tolerance intervals of normal distributions.

Please take a look at Mathematica 9 function InverseCDF[any distribution
function].

Re.: Handbook of Statistical Distributions with Applications, 10.6
(Krishnamoorrthy 2009 Chapman & Hall/CRC, ISBN=1584886358)

Thanks,
Max.

From: Jon K Peck [via SPSSX Discussion] [mailto:[hidden email]]
Sent: 2013-Nov-11 07:11
To: MaxJasper
Subject: Re: Inverse NonCentral t-Distribution

AFAIK, no one has requested this until now. I suggest that you post this
request to [hidden email].

What is it that you actually want to compute this for?

Jon Peck (no "h") aka Kim
Senior Software Engineer, IBM
[hidden email]
phone: 720-342-5621

From: MaxJasper <[hidden email]>
To: [hidden email],
Date: 11/10/2013 09:32 PM
Subject: Re: [SPSSX-L] Inverse NonCentral t-Distribution
Sent by: "SPSSX(r) Discussion" <[hidden email]>

I was hoping that by version 22 of SPSS these inverse PDF or CDF functions
be included in SPSS functions but alas not yet!

Max.

From: David Marso [via SPSSX Discussion] [[hidden email]]
Sent: 2013-Nov-10 20:11
To: MaxJasper
Subject: Re: Inverse NonCentral t-Distribution

AFAIK It doesn't exist in the available built in functions.
Looks like you'll need to build an iterative solution with NCDF.T as a
check point.
This came up on one of the LinkedIn groups recently.
Please post back whatever you come up with.
--
MaxJasper wrote
Hello folks,

I am looking for a SPSS sys code for Inverse NonCentral t-Distribution
using SPSS functions. Appreciate with many thanks.

Regards,

Max.
Please reply to the list and not to my personal email.
Those desiring my consulting or training services please feel free to
email me.
---
"Nolite dare sanctum canibus neque mittatis margaritas vestras ante porcos
ne forte conculcent eas pedibus suis."
Cum es damnatorum possederunt porcos iens ut salire off sanguinum cliff in
abyssum?"

If you reply to this email, your message will be added to the discussion
below:
click here.
NAML

View this message in context: RE: Inverse NonCentral t-Distribution
Sent from the SPSSX Discussion mailing list archive at Nabble.com.

Bruce Weaver

Re: Inverse NonCentral t-Distribution

Administrator

I believe the R functions are qt and qf. Both take optional non-centrality parameters.

http://stat.ethz.ch/R-manual/R-patched/library/stats/html/TDist.html
http://stat.ethz.ch/R-manual/R-patched/library/stats/html/Fdist.html

HTH.

David Marso wrote

I just fired up good old reliable (11.5) and NCDF.x and CNPF.x exist for beta, t, F and Chi2
I acquired this early 2003.

NCDF Noncentral cumulative distribution function.
A noncentral distribution function NCDF.d_spec(q,a,b,...) returns a probability p that a variate with the
specified noncentral distribution falls below q. It is available only for beta,
chi-square, F, and Student’s t.
NPDF Noncentral probability density function. A noncentral probability density
function NCDF.d_spec(q,a,b,...) returns the density of the specified distribu-
tion (d_spec) at q. It is available only for beta, chi-square, F, and Student’s t.

One solution for Max might be to see if R or Python support the Inv NCT?
Another is to explore whether one can call into Mathematica either via Com or Python bindings?
--

Jon K Peck wrote

The noncentral distributions have been in Statistics for many years - more
than ten IIRC. The issue of adding more functions is not about scientific
enlightenment.

Jon Peck (no "h") aka Kim
Senior Software Engineer, IBM
[hidden email]
phone: 720-342-5621

From: "MaxJasper" <[hidden email]>
To: <[hidden email]>,
Date: 11/11/2013 04:17 PM
Subject: RE: [SPSSX-L] Inverse NonCentral t-Distribution

Hi Jon,

I was very much hoping to see SPSS stat functions reach the level of
Mathematica functions so that for such functions there would be no need to
export SPSS data & leave SPSS. If you remember, SPSS even did not have any
of the noncentral distributions until recently! I guess the executives of
that era were more enlightened scientifically!

Regards,
Max.
MedStat.

From: Jon K Peck [mailto:[hidden email]]
Sent: 2013-Nov-11 15:38
To: [hidden email]
Subject: RE: [SPSSX-L] Inverse NonCentral t-Distribution

Max,

Calculating those particular functions is difficult, and there are several
different numerical methods that have been suggested that vary in accuracy
and in which parts of the distribution are most/least accurate. We cannot
add functionality in a fixpack (with very rare exceptions requiring
approval from lots of IBM executives). The most we might be able to do in
the short run would be to wrap the relevant R functions. They could
create a new Statistics dataset containing the specified values.

Jon Peck (no "h") aka Kim
Senior Software Engineer, IBM
[hidden email]
phone: 720-342-5621

From: "MaxJasper" <[hidden email]>
To: <[hidden email]>,
Date: 11/11/2013 11:50 AM
Subject: RE: [SPSSX-L] Inverse NonCentral t-Distribution

Hi Jon,

Thanks for your comments. I need inverse values of distribution functions
in many med stat fields mostly to be not worried of df or sample size and
usually in this field one has limited samples sizes so the most accurate
inverse values are needed.

I am hoping this deficiency be addressed in SPSS 22 update.

Regards,
Max.

From: Jon K Peck [mailto:[hidden email]]
Sent: 2013-Nov-11 11:05
To: MaxJasper
Cc: [hidden email]
Subject: Re: [SPSSX-L] Inverse NonCentral t-Distribution

Thanks. You can get approximate tolerance limits without the inverse
noncentral functions. Do you have an idea of how approximate these are?
NIST says that unless you have very small samples - N <=10, the
approximations "should not have much practical effect".

Jon Peck (no "h") aka Kim
Senior Software Engineer, IBM
[hidden email]
phone: 720-342-5621

From: MaxJasper <[hidden email]>
To: [hidden email],
Date: 11/11/2013 10:12 AM
Subject: Re: [SPSSX-L] Inverse NonCentral t-Distribution
Sent by: "SPSSX(r) Discussion" <[hidden email]>

Hi Jon,

Inverse NonCentral t-Distribution is used to calculate one-sided
upper/lower tolerance limits of normal distributions.

Inverse NonCentral Chi-Square distribution is used to calculate two-sided
tolerance intervals of normal distributions.

Please take a look at Mathematica 9 function InverseCDF[any distribution
function].

Re.: Handbook of Statistical Distributions with Applications, 10.6
(Krishnamoorrthy 2009 Chapman & Hall/CRC, ISBN=1584886358)

Thanks,
Max.

From: Jon K Peck [via SPSSX Discussion] [mailto:[hidden email]]
Sent: 2013-Nov-11 07:11
To: MaxJasper
Subject: Re: Inverse NonCentral t-Distribution

AFAIK, no one has requested this until now. I suggest that you post this
request to [hidden email].

What is it that you actually want to compute this for?

Jon Peck (no "h") aka Kim
Senior Software Engineer, IBM
[hidden email]
phone: 720-342-5621

From: MaxJasper <[hidden email]>
To: [hidden email],
Date: 11/10/2013 09:32 PM
Subject: Re: [SPSSX-L] Inverse NonCentral t-Distribution
Sent by: "SPSSX(r) Discussion" <[hidden email]>

I was hoping that by version 22 of SPSS these inverse PDF or CDF functions
be included in SPSS functions but alas not yet!

Max.

From: David Marso [via SPSSX Discussion] [[hidden email]]
Sent: 2013-Nov-10 20:11
To: MaxJasper
Subject: Re: Inverse NonCentral t-Distribution

AFAIK It doesn't exist in the available built in functions.
Looks like you'll need to build an iterative solution with NCDF.T as a
check point.
This came up on one of the LinkedIn groups recently.
Please post back whatever you come up with.
--
MaxJasper wrote
Hello folks,

I am looking for a SPSS sys code for Inverse NonCentral t-Distribution
using SPSS functions. Appreciate with many thanks.

Regards,

Max.
Please reply to the list and not to my personal email.
Those desiring my consulting or training services please feel free to
email me.
---
"Nolite dare sanctum canibus neque mittatis margaritas vestras ante porcos
ne forte conculcent eas pedibus suis."
Cum es damnatorum possederunt porcos iens ut salire off sanguinum cliff in
abyssum?"

If you reply to this email, your message will be added to the discussion
below:
click here.
NAML

View this message in context: RE: Inverse NonCentral t-Distribution
Sent from the SPSSX Discussion mailing list archive at Nabble.com.

--
Bruce Weaver
bweaver@lakeheadu.ca
http://sites.google.com/a/lakeheadu.ca/bweaver/

"When all else fails, RTFM."

PLEASE NOTE THE FOLLOWING:
1. My Hotmail account is not monitored regularly. To send me an e-mail, please use the address shown above.
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