>> All right, here is a tutorial video on entering data into a TI--well, I'm going to
do a TI-83 plus, although really for a lot of these TI calculators with statistical functions,
they'll be the same.
TI-83 and 84 should be identical and a lot of the others, you should be able to use using
this tutorial.
Anyways, for most of the things you want to do in statistics, if you want your calculator
to calculate stuff, you have to give it the set of data that you want it to calculate
on.
So the first step will typically be entering that data into the calculator.
So if you want to do that, step 1, is to press the button that says stat.
You got a stat button right here, hit this button.
A lot of what you do in this class will be under this statistical menu.
So if you hit stat, then something like this will come up.
The idea here is you have 3 different menus and then different things you can do within
each menu.
What you want to do when you want to enter data is under your first menu here, that's
the first option where it says edit.
So all you got to do is hit either enter or 1, 1 would take you to the first thing, but
since the first thing is already highlighted, you can just hit enter, either way is fine.
Then something like this will pop up.
So I guess step 2 is to hit enter.
[ Pause ]
And then it will pull up lists.
These lists may or may not have data in them.
As you can see, I have data in L1, L2 and L3.
But if I scroll to the right, there's nothing in L4 or L5 it looks like.
A lot of these lists have no data in them.
The idea here is you can store data from one problem and then work on another problem and
still save your old data and then come back and reference it later.
But if I am to enter data into a list, what I'm going to have to do is clear out whatever
list I want to put my data in.
I don't want this data that I used to have in L1 anymore so I'm going to say clear applicable--or
clear list if applicable.
[ Pause ]
So I want to clear out the data in L1.
The way I do that is by highlighting--try that again.
By highlighting that list name, I don't know.
[ Pause ]
That list name, i.e.
L1.
So note, I was down here.
I pressed up with my cursor to highlight L1 and then I can clear it out, if you hit this
button clear.
So the next step in here is to hit clear.
And now it will say, L1 is empty, I hit enter to save that and L1 goes away.
So clear and then enter.
[ Pause ]
And what I now have is a blank list that I can put my data into.
Enter data.
So maybe enter first observation.
Maybe my first observation is the number 100.
So I'm going to type in 100 here.
Note it says L1 1 equals 100, that's saying L1, the list I'm putting my data in.
The first observation is 100.
Hit enter.
[ Pause ]
And then continue in that fashion and to your second observation, and then hit enter, et
cetera.
So maybe my next observation is the number 200, my next observation is 150, my next observation
is 350.
You can continue putting observations in, maybe there's a 400, a 110, a 310, a 755,
maybe a 900, good enough.
So what you'll notice is that it's now asking for the 10th observation in L1, that's a good
way for me to check that I've put in 9 observations which is exactly as many as I wanted.
So now you're all done with your list.
So you don't have to enter out of here, or exit out of this menu or anything else.
Just hit the button of the next thing you want to do and you have all your data entered.
Note, can delete an observation.
Suppose I put in these 9 observations, I realize, "Well, I was only supposed to have 8 observations,
what happened?
Oh, I accidentally put in 400, that wasn't really an observation.
I got that number out of nowhere.
I want to get rid of this observation."
You can delete an observation by highlighting it--
[ Pause ]
--and pressing delete, so there's this DEL button.
[ Pause ]
And then one other thing you can do if you want to change any of these, you can just
highlight them and type the number in on top of it and change it.
So, can edit an observation by highlighting and retyping, and reentering.
So for example, maybe my first observation that I put in all the way on top here, 100,
that's supposed to be 101.
Just highlight it, type in 101, hit enter, you're good.
Now it changes to 101.
Lastly, if you ever want to insert an observation, you can do that also.
These lists aren't typically ordered--well, that's not true.
I guess sometimes the list--the order will be important.
So let's say that I really wanted 200 here to be my third observation.
I wanted to just say 100, 150 and then 200.
Well, what I would have to do is first delete this 200 here which I talked about in this
first note.
So if I hit delete, 200 is gone.
But now I got to put 200 back in.
So if I go down and highlight where I want 200, then I can hit this.
So, can insert an observation by highlighting where you want it--
[ Pause ]
--and then pressing--it's actually two different keys you'll have to hit here.
We want to get to insert up here which is in yellow or orange above this delete key.
So we'll hit second to say we're getting into the yellow menu and then we'll hit delete
to get this insert here and what you'll notice is it pushed 350 down to the fourth and put
in a 0.
So let me say how to do this by hitting second then delete.
And now I can type in the observation I wanted here.
I didn't even remember what I wanted, 200, 250, something like that, whatever it was.
Let's call it 200, good enough.
So there is a quick tutorial on how to enter data into a TI-83 or 84.
Hope that's helpful.