Question about Texas Instruments TI-89 Calculator

1 Answer

Hi , i've used Logistic regression to solve problem, given a tABle of values, but my calculator continues giving me "singular matrix" answer, what does it mean? how should I solve the problem?

Posted by on

  • anna_ussur Feb 24, 2009

    I know that it should make sense with no zeros , how can you change it?

×

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    MVP:

    An expert that gotĀ 5 achievements.

    Governor:

    An expert whose answer gotĀ voted for 20 times.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Contributor
  • 35 Answers

That means that the determinant of the table(s) is 0.

Posted on Feb 24, 2009

1 Suggested Answer

  • 3 Answers

SOURCE: Singular matrix error

I had this problem as well...Were you working on a SinReg equation by any chance? I was able to do every other type of regression (Linear, quadratic, cubic, ect..) In order to get Sinusoidal regression you need to make sure you arrow down to the Period box when entering the equation, and fill it in with the number of items in your table of values (a ten item list means a period of 10). That was the fix for me, so hopefully it works for you!

Posted on Feb 04, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

How to do interpolation in Casio f2f-4800p?


Interpolation mannual in fx-4800P - Fixya

www.fixya.com/support/t22818601-interpolation_mannual_in_fx_4800p
Jan 11, 2014 - interpolation mannual in fx-4800P - Casio Rare Vintage Scientific question. ... SOURCE: how can we do linear interpolation in casio fx-991ES ...

interpolate how can interpolate linear regression by casio ...

www.fixya.com/support/t22818666-interpolate
Jan 11, 2014 - interpolate how can interpolate linear regression by casio fx-4800P -Casio ... SOURCE: how can we do linear interpolation in casio fx-991ES ...

how to perform linear interpolation manually and on casio fx ...

? 6:39
https://www.youtube.com/watch?v=rCVM6RWMjQ4
Jan 7, 2015 - Uploaded by Yabets Jab
In this video you can simply understand how to find a value of a given missing number in a table on Casio fx ...Missing: 4800p

Linear Regression on a Casio calculator - YouTube

? 6:25
https://www.youtube.com/watch?v=OGmHagjZPjg
Oct 31, 2012 - Uploaded by cpobyrne1
How to perform a linear regression on a Casio scientific calculator. Example uses a ... A Casio fx-83WA calculator is used for the demonstration. .... Lagrange Interpolation Easily Explained on Casio fx-991ES Calculator!Missing: 4800p

Jan 05, 2016 | Casio Calculators

1 Answer

How to model real life data?


What is the question?
Put your calculator in STAT mode (2-var statistics or regression )
Enter your data in two lists, preferably sorted according to the x-value
Choose a regression model from the ones available and get the calculator to give you the best fit.
However to see which regression model best fits you data you need a graphing calculator to draw the scatter plot, then superpose on the scatter plot the curve of best fit given by the regression model.

Once you accept a model as the most suited one, you can use the equation of the curve to predict a y-value given an x-value (what ever REAL LIFE meaning they might have)
.

Dec 11, 2013 | Sentry CA 756 Calculator

1 Answer

Matrix entering and constants


Sorry to be the bearer of bad news, but the HP 10S calculator does not perform matrix calculations.
You have 9 variables A to F, M, X and Y. You can use them to store data, constants, calculation results, and other numerical values.
To store say the value 5674 in Variable A you press the key sequence 5 6 7 4 [SHIFT] [STO] A.
To recall the value stored in A (and use it in another calculation) you press [ALPHA] [A]. It will be displayed and you can do with it any calculation you want.
You can enter (store) data in Statistics modes
  • Mode 2 is for standard deviation SD (1-variable statistics)
  • Mode 3 is for Regressions.
You will have to read the manual starting from page 23.

Sep 23, 2013 | HP 10s Scientific Calculator

1 Answer

How do you find the value of a determinatant on a Silver Plus calculator?


Open the Matrix function by pressing 2nd [x^-1]>EDIT.
Once Matrix is created, press [2nd][x^-1]>MATH>[1:det(] complete the matrix name and then press ENTER. If matrix is non-singular, you will get your answer.

Nov 29, 2012 | Texas Instruments TI-84 Plus Silver...

2 Answers

I am trying to drive a prediction equation. but the book gives directions to aTI-84 and I have a TI-89. I have these steps "STAT, EDIT, L1, L2,STAT, CALC,LinReg(ax+b), ENTER" I have no clue how to make...


I assume you know how to enter data in your calculator. The keystrokes in the following pertain to TI92/92Plus/ Voyage 200 PLT. The main differences with the TI89/Ti89 Titanium is that the function keys F6,F7,F8 are not accessed directly but by the key sequences [2nd][F1], [2nd][F2], and [2nd][F3] respectively

1. CLEAN THE SLATE (so to speak) and ENTER DATA

In Home folder run F6: NewProb to reset the configuration.
Press Apps, and select 6: data/Matrix editor. Select a new data set
84e1901.jpg

Give it a name: here testing.

2133d3f.jpg

Press OK/ENTER, The data entry screen opens, enter your values.
0ab1602.jpg

When you finish press F2.PlotSetUp.

2. Statistical plot setup and scatter plot drawing

b142867.jpg.

Press F1:define to configure Plot1. Choose Scatter, then choose a mark for the data point. I select 5:Dot. and press [ENTER
0ee40be.jpg

Select the data column X=c1, Y=c2

65437f9.jpg

Press ENTER to save configuration. Press [CTRL] [GRAPH] On my TI92 the CTRL key is the [Diamond] key. On the following graph I changed the mark to a cross to see the data point better. I also played with the window dimension. You can also do that with ZoomStat. The graph remind me of a parabola (I know I chose the exact values)

7de9410.jpg

3. STATISTICAL CALC. AND REGRESSION ANALYSES.

Now we have to find the equation that fits these data best.
You press APPS 6:Data/ Matrix editor but you select current to return to your data set. You are taken to the data entry editor (Figure 3 above). In that screen Press F5:Calc to edit the type of statistics you want

On first line select the type of regression model : Linear Regression, QuadReg quadratic regression (or anything else available) X is from column1, Y is from column 2. Store RegEQ The regression equation in say Y1(x)

7c9f572.jpg

Press ENTER to save to get the Regression Equation. Here it is
As you can see I cheated: a perfect parabola. R^2 =1.

c46b604.jpg

And here the best fit represented on same graph as the statistical data

7097bac.jpg

Usually you have to try different regression models, until you find the one that fits best the experimental data.

Jul 26, 2010 | Texas Instruments TI-89 Calculator

1 Answer

Can't do inverse of matrices


The problem is with the data. The calculator is telling you that your matrix is singular. Inverting a singular matrix is analogous to dividing by 0. Just as you can't divide by 0, you can't invert a singular matrix.

If you think that the inverse exists, double check the entries in the matrix.

Apr 19, 2009 | Texas Instruments TI-83 Plus Calculator

1 Answer

"variable or flash application in use"


Hello,
First stop the application that is running [2nd][Quit] or [Escape]
From Home screen
[Apps][Data/Matrix Editor/][3:new] name the data set when asked.
A table is displayed Enter the values in list c1 and c2 You can rename the variables in header.
When finished press [F5:calc]
In calculation type right arrow select 5:linReg in front of x enter c1, in front of y enter c2 and [enter] to save. the equation shows when you press [ENTER]

Hope it helps.

Apr 03, 2009 | Texas Instruments TI-89 Calculator

1 Answer

Singular matrix error


I had this problem as well...Were you working on a SinReg equation by any chance? I was able to do every other type of regression (Linear, quadratic, cubic, ect..) In order to get Sinusoidal regression you need to make sure you arrow down to the Period box when entering the equation, and fill it in with the number of items in your table of values (a ten item list means a period of 10). That was the fix for me, so hopefully it works for you!

Jan 17, 2009 | Texas Instruments TI-89 Calculator

Not finding what you are looking for?
Texas Instruments TI-89 Calculator Logo

Related Topics:

390 people viewed this question

Ask a Question

Usually answered in minutes!

Top Texas Instruments Calculators Experts

kakima

Level 3 Expert

96417 Answers

k24674

Level 3 Expert

7987 Answers

Stevan Milanovic

Level 2 Expert

243 Answers

Are you a Texas Instruments Calculator Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...