Question about Texas Instruments TI-89 Calculator

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Help My ti-83 is not working the way I need it to. When I go to stat-test-1: z-test instead of typing numbers it only types letters. I need numbers!!!! help!!!!

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How do I get it back to the normal screen currently it is set in a custom mode, I lent it out and that person has screwed it up and I can't figure how to get it back to normal

Posted on Aug 04, 2008

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Just unclick the alpha button or reset the calc

Posted on Jun 13, 2008

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How to use the basc funtion on the ti-83 is there a way that i can find out how to find the right way or a map to get to the box plot or make a historgram


Use the STAT utility to enter your data in a list. (STAT>EDIT. If you have repeated elements you can use L2 as a frequency list. Once you finish entering the data press [2nd][QUIT]
In the main calculator screen, press [2nd][Y=¨to enter the STAT PLOTS.
Press 4:PlotsOff to decativate all plots, then activate say Plot1.

1. Press 1:Plot1. Use arrow to highlight ON and press ENTER.
2. Use the DownArrow to move cursor to the line Type:
3. Select the plot type. (On this line only the right or left
arrows will allow you to select a type.)

Select the type and press ENTER.
4. Use DownArrow to move cursor to the XList line.
5. If the default (L1) suits your needs, press ENTER.
If not chage the list label to the correct one.

6. Do the same with the YList label.
7. Selectr the MARK style and press ENTER
6. Press GRAPH to have your plot

Sep 04, 2011 | Texas Instruments TI-83 Plus Calculator

1 Answer

Determine the coefficients of the equation y=ax^3 + bx^2 + cx + d so that it will have critical points at ( 1, 0) and ( -2, 27).


I will give you a solution for a ti-83 Plus or ti-84 Plus calculator as they are very similar.

You should hit the [stat] or [stats] button as I forget which it is. Then hit [enter] which will bring you to a stats list editor of some kind. You will want to enter the data for your x-axis in L1 and the data for your y-axis in L2. Once you have completed your lists, hit the [stat] button again and then click [right] or the right arrow in order to move to the section of calc. from number 4 down it will help create a graph of that type of function. You desire a cubic function so it is number 6, so you hit [enter] on number 6 and then you will be at the home screen with CubicReg already written. You just have to complete the statement and it will do it for you. hit the [2nd] [1] and then the comma button, then [2nd] [2] and [enter]. that will do it for you. Also if you want the equation to appear in your y= menu, you can hit [2nd] [stat] and then search for the Y1, but make sure you have a comma between the L2 and the Y1.

Mar 24, 2011 | Calculators

1 Answer

Does anyone know how to clear the number stored for the x-variable on the TI-86? Thank you for any help you can give.


Que Pasa Cassandra,

Even though I don't own a TI-86, I do have a TI-83 and a TI-89 Titanium and I will offer you a few suggestions.

SUGGESTION ONE: Memory
Hit MEM
Find X [it could be categorized under EXPR - expressions]
Delete X

SUGGESTION TWO: Delvar
The TI-86 may have the "Delvar" code available for the main screen; If so:
Hit DELVAR
Type X
Hit ENTER

SUGGESTION THREE: Zero Out
The TI-86 might have all the variables default to a value of zero; if so, then deleting a variable would have the same effect as zeroing it out. So; this would be easy:
Type 0
Hit STO
Type X
Hit ENTER

To check if your TI-86 does indeed stores values of zero for all unused variables just type in a variable that you haven't used, hit enter, and see whether or not the calculator returns 0 or the letter. If it returns zero then suggestion three will work. If it returns the letter then you will need either suggestion one or suggestion two.

I hope that helped.

Yabba-Dabba-DOOOOOOO!



The Math Cheetah
411@themathcheetah.com

Mar 14, 2011 | Texas Instruments TI-86 Calculator

1 Answer

I have a trouble with my ti-83 plus. are there any body there can help me out? when i click on STAT to load my number on, but on the L1,L2, L3...and so on, it was disappear maybe somehow i delete them...


There is no L7 list. You can put your data in any available list. You can even create your own lists.
Anyway, to recover the L1,L2,L3, and L4,
Press [STAT][5:SetUpEdidor] [ENTER]
Calculator displays Done.

Press [STAT]. Under Menu EDIT, Press [1:Edit]
The List editor opens the L1,L2, etc. liststo let you enter your data.

Feb 04, 2010 | Texas Instruments TI-83 Plus Calculator

1 Answer

How to do a t-test on the TI-83 Plus


Easy:
1.) Turn it on ("ON" button)
2.) Hit the "STAT" button
3.) Hit the Right arrow key Twice
4.) Hit the down arrow key once or hit the "2" button
5.) Enter your Data into List one (L1) OR Right Arrow once and "ENTER" to just enter your statistics

To just Enter the Statistics:
Down Arrow once and Enter:
Hypothesis mean
Sample Mean
Standard Deviation
Number of Tests
and Either (not equal to)Ho , <Ho , or >Ho
Then either hit Calculate or Draw

If this is confusing try this website:

http://cfcc.edu/faculty/cmoore/TI83TTest.htm

Apr 16, 2009 | Texas Instruments TI-83 Plus Calculator

1 Answer

My graphing calculator reads err:invalid dim. How do I fix that?


A previously posted solution, taken from my Web page without permission, was removed by the admins at my request. The person who posted it should have asked first and should have credited me. Here is my solution:
==========================================
This message has several possible causes.
  • If you get this when making some kind of plot, you probably forgot that you have one of Plot1 Plot2 Plot3 turned on, and it refers to two lists that don't have the same length. The cure is to press [Y=] and turn off the unwanted plot.
  • If you’re actually doing something that needs lists, such as a regression, but your lists don’t have the same length, you get this message. Press [STAT] [1] and check your lists.
  • You also get this message when you give the TI-83 a list or matrix where it expected a variable or number, or vice versa. For instance, on the STAT PLOT screen, you may mean to press [2nd] [L1] but if you miss the [2nd] you actually type a Y. In the same way you might type a Z where you intend to type L2.
  • Karl Wein offers another possibility. You can create a list called L1, but that is not the same as the predefined list called L1 (note the small-capital L), and of course similarly for lists 2 through 6. If you accidentally delete a predefined list from the editor, make sure to bring it back with the SetUpEditor command.
In general, when you see this message you need to check carefully through what you’ve done to make sure that you used lists where you were supposed to, and nowhere else.
===============================================
I am copying this from my own Web page for my students at
http://www.tc3.edu/instruct/sbrown/ti83/oops.htm

Stan Brown

Mar 30, 2009 | Texas Instruments TI-83 Plus Calculator

1 Answer

Graph feature is not working on TI-83


you have one of your stat plots on that is what is messing it up. So either turn off the stat plots. Or just reset your calculator. hit 2nd then the plus (+) key then 7 then 1 then 2. Good luck

Nov 12, 2008 | Texas Instruments TI-83 Plus Calculator

1 Answer

Graphing


You're probably getting a dimension error trying to graph a function that does not involve stat plot features. You can correct this by turning off the stat plot features. Press "2ND" "STAT PLOT" and then select 4:PlotsOff.

Dec 04, 2007 | Texas Instruments TI-83 Plus Calculator

6 Answers

An "Invalid Dimension Error" on my TI-83 (not plus)-- Please help!


I'm having the same problem and I tried turning off one of these stat plots but turns out I don't know how to do it, or how to tell if I did or not. Help please?
Thanks

Oct 12, 2007 | Texas Instruments TI-83 Plus Calculator

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