[BlindMath] Z-score & Percentile Charts.

[Ray McAllister]

I've found tables for them online, but I haven't found one that's
accessible, that opens up fine in JAWS.  Does anyone know where I could get
one?

Thanks, 
Ray. 


-----Original Message-----
From: BlindMath [mailto:blindmath-bounces at nfbnet.org] On Behalf Of Jonathan
Godfrey via BlindMath
Sent: Monday, November 6, 2023 2:50 PM
To: Blind Math list for those interested in mathematics
Cc: Jonathan Godfrey
Subject: Re: [BlindMath] Z-score & Percentile Charts.

Ray,

There is no analytic solution to the integral of the formula describing the
normal distribution curve. That's why the tables exist.

You could  use software in a tutoring situation. The student will of course
need to be confident using the tools they are allowed within their course.
Even Excel will do.


HTH,
Jonathan




-----Original Message-----
From: BlindMath <blindmath-bounces at nfbnet.org> On Behalf Of Ray McAllister
via BlindMath
Sent: Tuesday, November 7, 2023 3:07 AM
To: 'Blind Math list for those interested in mathematics'
<blindmath at nfbnet.org>
Cc: Ray McAllister <raymcal at att.net>
Subject: [BlindMath] Z-score & Percentile Charts.

Hi, how are you/  Does anyone out there know where I can find an accessible
chart online for statistics with Z-score and percentile and vice versa.  The
ones I've found don't seem to open up to be readable.  I probably need one
chart for each direction.  I'm tutoring someone in math, and she's doing
some statistics, and I wish to find a chart I could check along with her to
make sure she's doing the work right.  Or, is there just a formula I could
use, that's accessible, to calculate it by hand?  If someone has a chart for
these, feel free to just email it to me.

Thanks,

Ray McAllister.





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