Steven Stoline | 20 Oct 10:47 2014
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plot an angle of 450 degrees and adding a circular arrow to it

Dear All:

I am wondering if someone can show me how to plot an angles around the
center of a unit circle with x-y vertices added to it.

Also how to add arrows showing the size and the direction of angle(s).

Examples: 135 degrees and 450 degrees angles.

with many thanks
Steven

--

-- 
Steven M. Stoline
1123 Forest Avenue
Portland, ME 04112
sstoline <at> gmail.com

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Steven Stoline | 12 Oct 16:31 2014
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R codes for numerical analysis methods

Dear All:

I am wondering if I can find R codes (functions) for numerical analysis
methods, linear algebra, and differential equations available somewhere.

many thanks
steve

------------------------
Steven M. Stoline
1123 Forest Avenue
Portland, ME 04112
sstoline <at> gmail.com

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Steven Stoline | 10 Sep 05:12 2014
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length of vectors with tapply

Dear All:

I was trying to get the lengths of vectors using "length" in tapply as
follows:

ni<-tapply(data[,2], data[,2], length, na.rm=TRUE)

but it did not work for me. I am not sure what I am doing wrong.

I am not sure if I should use different function.

Here is the data:
============
data<-matrix(c(8,24,0,0,16,32,6,0,16,7,4,4,9,5,8,18,2,0,4,0,8,3,1,5,24,12,2,8,1,8,
1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,2,2,3,3),30,2)

The answer should be:

ni: 18  ,  10  ,  2

thank you very much
Steven

--

-- 
Steven M. Stoline
1123 Forest Avenue
Portland, ME 04112
sstoline <at> gmail.com

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(Continue reading)

AbouEl-Makarim Aboueissa | 14 Aug 19:08 2014
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R codes for Sampling Techniques, 3rd Ed., by William Cochran

Dear All: (I posted this request in February 2014)

I am going to teach Sampling Methods course in Fall 2014. I am going to use the book by William Cochran,
Sampling Techniques, 3rd Ed.

I am wondering if someone have R codes for examples and selected problems given in this textbook.

Any examples and/or exercises will help.

Thank you very much in advance.

Abou

 
==========================
AbouEl-Makarim Aboueissa, Ph.D.
Associate Professor of Mathematics & Statistics
Graduate Program Coordinator
Department of Mathematics & Statistics
University of Southern Maine
96 Falmouth Street
P.O. Box 9300
Portland, ME 04104-9300
USA

Tel: (207) 228-8389
Fax: (207) 780-5607
Email: aaboueissa <at> usm.maine.edu
          aboueiss <at> yahoo.com

(Continue reading)

Antonio Pedro Ramos | 15 Jul 03:19 2014
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Stay in touch with me on LinkedIn

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Anke Piepenbrink | 29 Apr 18:23 2014
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Interactive shiny apps for introductory statistics course

Hello,

I developed this Spring semester for my introductory 
statistics course interactive shiny applications that are available 
online. 

For now I have descriptive statistics, probability and 
sampling distribution and t and chi-square test (regression analysis 
will come soon). I use task assignments for teams of three students to 
guide them through the applications and they have to write a report what
 they learn.
The advantage is that students can first experience 
statistics before they have to do it on their own. They can also go back
 as often they need to. 
Overall students' feedback is positive.

Access to the applications is via my blog page: http://ankepi.wordpress.com/teaching/data-analysis/rstatlab/

Feel 
free to contact me if you are interested in the task assignments and I 
am also thankful for feedback how the apps can be improved.

Anke Piepenbrink

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Hello,

(Continue reading)

Stas Malavin | 9 Apr 21:23 2014
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Webinar service for R course

Dear colleagues,

I plan to give a short online course for several friends covering the beginnings of R and multivariate
statistics. Could you recommend any suitable (webinar) service? I don't intend to repeat the course, at
least in the near future, so probably I'd better use a trial version or a one-time solution, not a full one.
As for the content, I plan to base on live streaming of the console (thus screen sharing is needed), and to
show a presentation outlining chief moments. I think I also need text chat.
Sorry if I overlooked a similar question here and thank you in advance, any advice is highly appreciated.

Stas

Bob Dobrow | 21 Mar 18:24 2014

New Probability textbook with R

Dear friends,

A new undergraduate probability textbook: Probability With Applications and R (Wiley 2013)
is now available.

One focus of the book is simulation. The book includes an R tutorial and example script files.

Here is the link to the book on Wiley's homepage:
http://www.wiley.com/WileyCDA/WileyTitle/productCd-1118241258.html

Bob Dobrow
Department of Mathematics
Carleton College
Northfield, MN
rdobrow <at> carleton.edu

AbouEl-Makarim Aboueissa | 18 Feb 15:23 2014
Picon

R codes for Sampling Techniques, 3rd Ed., by William Cochran

Dear All:

 
I am going to teach Sampling Methods course in Fall 2014. I am going to use the book by William Cochran,
Sampling Techniques, 3rd Ed.

 
I am wondering if someone have R codes for examples and selected problems given in this textbook.

 
Thank you very much in advance.

Abou

 

 
==========================
AbouEl-Makarim Aboueissa, Ph.D.
Associate Professor of Statistics
Graduate Program Coordinator
Department of Mathematics & Statistics
University of Southern Maine
96 Falmouth Street
P.O. Box 9300
Portland, ME 04104-9300
USA

Tel: (207) 228-8389
Fax: (207) 780-5607
(Continue reading)

Steven Stoline | 26 Jun 15:52 2013
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Consistency of asymptotic variances of MLEs under fixed left-censoring

Dera R users: I know it is not related, but hopefully someone can help.

I am looking for some references (papers or books) on the conistency
results of maximim likelihood estimators under fixed left-censoring.

many thanks
Steven

--

-- 
Steven M. Stoline
1123 Forest Avenue
Portland, ME 04112
sstoline <at> gmail.com

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Steven Stoline | 15 Jun 21:13 2013
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Papers on consistency results of MLE under fixed left-censoring

Dear R Users:

My request may be not related, but I thought to ask it here. I am looking
for some references (papers) on consistency results of MLE under fixed
left-censoring. Can someone help me with this.

thanks
Steven

--

-- 
Steven M. Stoline
1123 Forest Avenue
Portland, ME 04112
sstoline <at> gmail.com

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