In the TI-83 plus, i don't have a Y1 list in the 2nd graph menu. All I have is X and it wont let me scroll up to the X, it just keeps scrolling up into neg. numbers

If some of the lists are missing press the STAT button then select SetUpEditor and ENTER to restore all of them (without data, of course.)
If the statistical plots are turned OFF you can turn one of them back ON again. Press SHIFT Y1= to access STAT PLOTS. Press 4:Plots Off. A good habit to avoid problems. After you turn all plots OFF, you must turn one of them ON if you intend to draw statistical graphs. You can for example Turn Plot1 ON.

1. To do so Press SHIFT Y1=, select say 1:Plot 1 ENTER.
2. Highlight ON and press ENTER.
   
3. Press DownArrow to move to line TYPE
4. Then you can set the plot type. You have 6 choices. Use the left/Right arrows to select one of the 6. The selected plot type icon will remain highlighted when cursor is moved.
5. Use DownArrow to move to XLIST line and select the x-values LIST. etc.
6. When finished Press 2nd QUIT to exit the stat plts configuration settings.

One statistical value that may be of interest to you is the R, R^2 coefficients. To have it displayed (if the regression model has it), you must set DiagnosticsON.

Press SHIFT 0 to enter catalog. Press x^-1 key to jump to the first command that starts with D.
Scroll down to reach DiagnosticsON, highlight it and press ENTER then ENTER.

The calculator is trying to graph points in a list and they are either empty or not the same length.

If you do not want to graph points in a list, go to 2nd, Y= and turn each of the three plots off.

If you are trying to graph points in a list, check that you entered them correctly, they are not the same length, and then check that in the StatPlot menu you are asking the calculator to graph the correct lists.

Turn StatPlotsOff
Press [2nd][STATPLOT][4:PlotsOff][ENTER].


Calculator answers DONE.
You can Clear All Lists:
Press [2nd][0] to access the (CATALOG) of commands.
Scroll till you reach ClrAllLists

OR
press [PGRM] to jump to the first command in CATALOG that starts with C an then scroll to ClrAllLists

OR
Press [2nd][+] to open mempry Management and select [4:ClrAllLists]

Command echoes on main screen.
Press [ENTER]
Calculator answers DONE.

Draw your graphs now.

ti 83 is a crappy calc. may i recommend a casio

Hit 2nd then hit mem then scroll to all and click yes. This will master rester everything and restore it to factory settings.

Hello,
If you were trying to do paired-variable statistics the lists fo not have the same length, Check you lists and make sure they have the same number of elements.
If you were trying to draw graohs and you got this message, then you should turn StatPlots OFF. To do so press
[2nd][STATPLOT][4:PlotsOff][ENTER][ENTER]
Press [2nd][CATALOG] C. In the list of commands that appear scroll down a bit to reach ClrAllLists. Point to it and press [ENTER][ENTER]. Calculator displays Done.
Restart you graphs.
If you were using matrices, the dimensions may be incompatible for the operation.

If you had spelled what you were doing prior to the error message, I would not have had to guess.
Hope it helps.

Hello,
You must have done some statistical calculations. This type of calculations activates the statistical plots. The resulting configuration conflicts with the normal graph configuration.
Before drawing function graphs, you must turn off the statplots:
Press [2nd][Y=] to access (STATPLOT)
Press [4:PlotsOff][ENTER][ENTER] Calculator displays Done.

Then you press [2nd][0] to access the (CATALOG) of commands. Then [PGRM] to enter the letter [C]. Cursor jumps to the first command that starts with the letter c (omitting the Greek symbols). From there, scroll a bit to highlight [ClrAllLists] and press [ENTER][ENTER]. After clearing the lists the calculator displays Done.

You should be able to draw your graphs.
If that does not work, just reset the Ram as described below.
Press [2nd][+] to access (MEM)
Press [7:Reset][1:All Ram][2:Reset].
Press [CLEAR] to erase the Ram Cleared message.

Press [Y=] and enter your functions. Press [ENTER] at the end of each function. Make sure each [=] after Y1, Y2, remains highlighted after the cursor moves to some other location.

Hope it helps.

Hello,
1.Press [MODE], scroll to set Function graphing mode.
2.Press [STAT] [5:SetUpEditor], command is pasted in home screen. Press [ENTER]. Screen displays Done. This clears old values in lists

3. Press [STAT][1:Edit] to enter data.
Press [ENTER] after each number. Cursor moves to next row. After finishing the data of Listt L1, use arrow right and UP to the head of list L2. Enter the values in list L2. Press Enter after last element.

4. Press [Y=] to display Y= editor. Clear function Y1 and all functions or remove highlight from the = in Y2, Y3, etc.
5.Press [2nd][STATPLOT]1 to select 1:Plot1


The blinking cursor on ON means graph will be drawn. Type chosen is Scatter plot. Mark chosen is a dot.

Press [ZOOM][9:ZoomStat]

If you think that the curve look like a straight line you can try to do a linear regression.
Press [STAT] Arrow right to highlight [CALC]
Select [4: LinReg(ax+b)]



LinReg(ax+b) echoes on run screen. Press [2nd] L1 Press comma, Press [2nd] L2 press comma Press [VARS] Arrow right to select [Y:VARs][1:Function] [ENTER][1:Y1]

ENTER

That is the equation for the linear regression. As you see eqaution has been saved in Y1. Press [GRAPH] to get the data and the regression curve drawn on same graph.


Hope it helps.

Hello,
Reset the memory to defaults and you will not get the error.
[2nd][MEM][7:Reset][Defaults] [2:Reset] [ENTER]. Press [CLEAR] and them [Y=] to enter the function. No need to set Zoom. Defaults work fine for y1= 4X+3.
Press [GRAPH].
Hope it helps

Hello,
Reset calculator to defaults
[2nd][MEM][7][2][2] Defaults set.

[Y=] on line Y1= enter your function then press [GRAPH]
You can draw several graphs on the same screen.
If nothing shows (except the axes) use [ZOOM] to Zoom in or zoom out or use [WINDOW] to change the values of Xmin, Xmax, Ymin, Ymax.

Hope it helps.



Hope it helps