00:10
For exercise 3a on regression, we're going to make a box.
00:17
So let's do that for a graph.
00:20
Three, six, one, two, three, four, five.
00:29
All right, and now let's label this.
00:31
We'll start at zero.
00:32
It's five, ten, fifteen, twenty, twenty -five.
00:41
Then we have five, ten, fifteen, twenty.
00:45
25 and 30.
00:49
Next, let's plot our points.
00:54
So, we have the following points right about here.
01:04
And our last one is on 20.
01:15
Hold on.
01:18
This one is supposed to be right about here.
01:24
And now we have a 20.
01:27
So now that we're on b, we can say to describe it, so we have to determine our sample means, means x bar and y bar, and then we have s s xy and s s x that we need in order to determine the formula...