Question about Texas Instruments TI-84 Plus Calculator
Hello,
It is noranl that you cannot enter data in the table becuase it was generated from the function you entered. If you specify the function you cannot specify the data in the table. But if you want to enter you own values, that is doing statistics, not graphing functions.
To do stats
Press STAT button, then select 5: SetUPEditor ENTER ENTER. You do that to reset calculator to do stats.
After that press STAT again, and select 1:Edit. The lists open to you and you can enter your data in the lists
But not knowing what you really want to do, I cannot advise you better.
Hope it helps.
Posted on Oct 07, 2009
Testimonial: "thx for the visual"
Do you actually read what people take time to write. The way to enter YOUR values in a table is to create a statistical table. That is the name for it. Once you enter the data such as in a census, you analyse them to find meanings, make predictions. I gave you the instructions to create the data table. Check other threads. Look for standard deviation, best fit, statistical graphs, histograms.
Before you rate a solution as worthless, you should try it first. If you don't understand what we say, just ask for further clarifications.
Here I am going to enter the values for a curve. Actual values will be shown on the lists L1 and L2. You create the lists as I described before [STAT][1:Edit][ENTER]. Lists open and I start x= 1, 2, 3, 4, 5, 6,7,8,9,10. Y=1, 4, 9, 26, 25, 36,49,64, 81, 100. As you see these values are made up to make the curve look like a parabola. y=x^2. When you do it you enter your own values. Ok.
Then You press [2nd][STATPLOT] you scroll down to [4:PlotsOff] [ENTER] to clear any configuration that may give you errors.
Press 4 and [ENTER]. The screen shows PlotsOff. You press ENTER and the screen will look like this
Then you press [2nd][STATPLOT] Select Plot1 and [ENTER] . The cursor will blink on ON. Press ENTER to validate. Move cursor to TYPE . The first icon is that of a scatter plot. Reproduce what is on the screen that follows. L1 contains your Xvalues, and L2 your Y values.
.
Press [GRAPH] That is what you see. Not much.
To see more of the graph I change the Window setting by pressing [ZOOM].
I scroll down till I see [9:ZoomStat] . and press [Enter]
Here is now what I see.
Now you can press [STAT] then select CALC. Select 5:QuadReg quadratic regression (a parabola), because I know it is a parabola I created it on purpose.
I select 5 and press ENTER. The calculator tries to fit the data to a parabola and gives the equation. Here it is. The fit is perfect, because I chose the values.
I artificially created statistical data to show you how to do a scatter plot. I chose the form of a parabola, because you wanted one. In real life you enter the values you got or measured, an so on, draw a scatter plot, look at the curve and try to guess : This is a straight line, this one a parabola, this reminds me of an exponential. After that you try the different models, till you find th so-called best fit.
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Have the equation in the Y= then if you cant put info into the X column, go to TblSet (2nd Window) then where it said Indpnt, set it to ASK.
Posted on Jan 25, 2010
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Posted on Jan 02, 2017
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I know its going to generate data from the function I make but that was a solution given to me. What I want to do is make a graph by entering my own X and Y values. But the Y table is non existant unless I create a function for it.
I know its going to generate data from the function I make but that was a solution given to me. What I want to do is make a graph by entering my own X and Y values. But the Y table is non existant unless I create a function for it.
so how do I get the Y table to work without making a function for it?
I did read it and I did try it but it isnt going to bring back my "Y" table. What you said didnt apply to my situation.
I'm using coordinates (9,0) etc to plot a parabola, I have to enter my X data values in one column and my Y data vlaues in another, But I cannot do so without creating a function for the Y table and when I do that I can't submit my own values.
I used to be able to submit my own values in the Y table but I can't now for some reason. Someone on here had the same problem but it wasnt answered...
I meant to say a scatter plot instead of a prabola. Don't get upset, I think I was justified in rating the current solution as Not helpful.Calling it worthless is a little harsh.
But that was probably due to the fact I wasnt very clear....TT_TT sorry
I dunno if this will help but my problem looks like this if you click on the link and scroll down to the third page where it says : The Y values are missing from the table...
http://itech.pjc.edu/falzone/handouts/gr...
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