[MOVED] Help with a TI-84 graphing calculator (scatter plot)

[Kathleen bell]

I've done it before, but I forgot how to get to the L1 and L2 boxes for graphing a scatter plot. I'm ok from there.

 

[skeeter]

what do you mean by the L1 and L2 boxes?

to do a scatterplot ...

1. make sure your lists have the same number of data points
(you do know how to edit the lists, correct?)

2. clear all functions in the Y= menu

3. press [2nd] [Y=] to enter the stat plot menu

4. select a plot

5. turn the plot on

6. select the type plot to scatter (the first one)

7. Xlist: L1 Ylist: L2 (or whatever lists you have your data in)

8. select whatever mark for the data you want

hit [Zoom] [9] ... you should have your plot.

 

[Kathleen bell]

That's what I meant I guess, the x and y lists. How do you get those?

 

[galactus]

I think I may know what you mean by L1 and L2.

You want to do a linear regression, I am guessing?.

My TI-92 is probably similar.

Enclose your x values between curly brackets, like so(I'll use made up data):

{1,2,3,4,5,6}

Do you have a STO button?. Store them in L2.

Do the same for the y values.

Now type in LinReg L1,L2 ENTER

The display may say DONE(mine does).

Now type ShowStat and hit ENTER. Your data will appear, such as the line equation, R^2, etc.

Now, to get your scatter plot:

Type Regeq(x)->y1(x) ENTER
NewPlot 1,1,L1,L2
GRAPH

Mind you, this is how my ol' 92 works. The 84 may be a little different, I don't know.

You can find the manual for your 84 on the TI website http://www.education.ti.com