[BlindMath] Scatter Plots for Regression Analysis

Wed Jan 10 20:31:38 UTC 2018

Hi Jonathon,

Thanks for those great resources - will go through them more thoroughly
after some sleep.

I'm actually taking 2 courses. For the first, computer-aided data analysis,
I'll be using R, SPSS 24 and SAS 9.4. The second is a regression analysis
course and I don't think there's any software usage involved for that one.

Best regards,
Dickson

-----Original Message-----
From: BlindMath [mailto:blindmath-bounces at nfbnet.org] On Behalf Of Godfrey,
Jonathan via BlindMath
Sent: Thursday, January 11, 2018 4:19 AM
To: Blind Math list for those interested in mathematics
<blindmath at nfbnet.org>
Cc: Godfrey, Jonathan <A.J.Godfrey at massey.ac.nz>
Subject: Re: [BlindMath] Scatter Plots for Regression Analysis

Hello,

You haven't stated which software your course is using, but as will come to
no surprise to most list members, I will promote R for the most part. I will
recommend other software in some circumstances (usually if it is the right
software being used by the class and adequate support is available). I seem
to have missed my tenth anniversary for doing so on this list somehow.

Anyway, in addition to the base distribution of R, you will find the tools
offered through my add-on package (called BrailleR; watch the caps because
they are important in R) useful for doing a regression course. I suggest
that using any other software will mean you will have to rely much more
heavily on sighted assistance.

I recommend that you and the teaching team meet to discuss how you will
complete the course. As part of the preparation for that meeting, I
recommend that all of you take a read of two articles written by me and the
only other totally blind person to gain employment as a lecturer in a
statistics department. 
Godfrey, A. J. R. and M. T. Loots (2014, July). Statistical software (R,
SAS, SPSS, and Minitab) for blind students and practitioners. Journal of
Statistical Software, Software Reviews 58(1), 1-25. 
   Godfrey, A. J. R. and M. T. Loots (2015, November). Advice from blind
teachers on how to teach statistics to blind students. Journal of Statistics
Education 23(3), 1-28. 

Links to pre-print versions more readable with a screen reader are:
   https://R-Resources.massey.ac.nz/papers/JSE.v23.n3
and
   https://R-Resources.massey.ac.nz/papers/JSS.v58.s1

A third paper, not written by me is noteworthy as it shows what was done for
one student taking a regression course. 
Erhardt, R. J. and Shuman, M. P. (2015), 'Assistive technologies for
second-year statistics students who are blind', Journal of Statistics
Education [Online] 23(2). 
URL: http://www.amstat.org/publications/jse/v23n2/erhardt.pdf 

Then, if you do choose to use R as the preferred software, you will probably
want to make use of the resources at
   https://R-Resources.massey.ac.nz/papers/JSE.v23.n3
    especially the e-books at
   https://R-Resources.massey.ac.nz/papers/JSE.v23.n3LURNBlind
and
   https://R-Resources.massey.ac.nz/papers/JSE.v23.n3BrailleRInAction

Cheers,
Jonathan

-----Original Message-----
From: BlindMath [mailto:blindmath-bounces at nfbnet.org] On Behalf Of Susan
Osterhaus via BlindMath
Sent: Thursday, 11 January 2018 8:34 a.m.
To: Blind Math list for those interested in mathematics
<blindmath at nfbnet.org>
Cc: Susan Osterhaus <osterhauss at tsbvi.edu>
Subject: Re: [BlindMath] Scatter Plots for Regression Analysis

The Orion TI-84+ from APH and Orbit Research's collaboration can do
regression analysis. Our high school students use this accessible calculator
for such tasks. However, we are able to obtain these calculators for our
students with federal quota monies, and therefore it is an affordable
user-friendly method. I believe Jonathan Godfrey (also a member of this
list) is the expert on using the R statistical software, which might
interest you.

Susan

Susan A Osterhaus
Statewide Mathematics Consultant
Texas School for the Blind
  And Visually Impaired
1100 West 45th Street
Austin, TX 78756
susanosterhaus at tsbvi.edu
www.tsbvi.edu/math
www.tsbvi.edu/selected-topics/mathematics

-----Original Message-----
From: BlindMath [mailto:blindmath-bounces at nfbnet.org] On Behalf Of Dickson
Tan via BlindMath
Sent: Wednesday, January 10, 2018 11:24 AM
To: 'Blind Math list for those interested in mathematics'
<blindmath at nfbnet.org>
Cc: Dickson Tan <dickson.tan.2013 at gmail.com>
Subject: [BlindMath] Scatter Plots for Regression Analysis

Hi,

Apologies for bringing up a topic that must have been covered before, but
the lack of a search functionality in the list archives makes it unuseable
for referring to past discussions on a specific topic.

I'm taking a course on regression analysis, and my professor said that "
There are quite a number of plots throughout the course as scatter plots are
very important parts in finding an appropriate model, a suitable
transformation and in checking for assumption based on the residuals."

Does anyone have ideas on how to deal with these or possible alternatives
for assessment purposes?

Thanks

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