Subject: Re: Several Questions
From: Jerry Kissick (jkissick@pcc.edu)
Date: Tue Mar 14 2000 - 15:12:20 EST
Annette and other interested persons.
With a TI-86 you first enter the data by the following steps:
[2nd] [STAT] [EDIT]
At this point you get a menu with xStat, yStat, fStat at the top of the
columns. The usual place to enter the data is in xStat and yStat unless
you want to save the data in which case you can place your own names at the
top of the columns and then enter the data. Next use the following steps:
[exit] [2nd] [STAT] [CALC]
then choose the type of regression you want like:
[LinR]
and tell the calculator what data to use and where to put the reg equation.
Your entry on the home screen should look like:
LinR xStat, yStat, y1
or whatever equation you want the regression stored in. The results of the
calculation will appear on the screen and the equation will be in y1.
You can also access the regression equation after calculating it in a
couple of ways.
1. [2nd] [STAT] [VARS] [MORE] [MORE] [RegEq]
2. [2nd] [CATLG-VARS] [MORE] [MORE] [STAT]
Then choose the RegEq from the list.
On the TI-92, you can do algebra of functions on the home screen by typing
in the names of the equations you wish to use. Assuming the equations are
already entered in y1 and y2, you type something like the following on the
home screen:
y1(x) + y2(x) [ENTER]
and the algebra is performed. You must use the (x) notation or it will not
work.
I can not help with the PDF problem.
Hope this is helpful.
Jerry Kissick
>1. One of my students has a TI-86 calculator. How do we get the regression
>equation? After we get it, do we put it in y= or somewhere else?
>
>2. Also, does the TI-86 have y-vars? If so, how do we access it?
>
>3. How do you access y-vars on the TI-92, if it has it? I want to show the
>algebra of functions and don't know where to get y1 and y2.
>
>4. I printed a test using Mathtype and converted it to a PDF file to send
>over the web. At home, using Adobe Reader 3 or 4, it looks fine. At work,
>using Adobe Reader 4 the () contain extra symbols. What's the problem?
>
>Thanks,
>Annette Hawkins
>
>
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Jerry Kissick Phone: (503) 614-7606
Mathematics Department Chair Fax: (503) 614-7887
Rock Creek Campus e-mail jkissick@pcc.edu
Portland Community College Building 2 Room 222a
17705 NW Springville Road
Portland, OR 97229
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