00:01
All right, in your question, you're given a data set for math sat scores for 19 students, and you're asked to use technology to complete the question.
00:11
We're supposed to find the correlational coefficient and the equation of the line of best fit.
00:17
Now, the technology i'm going to be using is the desmos online graphing calculator.
00:22
And the first thing you want to do when you get to desmos is you want to hit the plus key, and you want to select table.
00:28
So once i've selected table, i'll go through and i'll enter the entire data set.
00:35
There's your hour studying, and then here are your math sat scores.
00:42
And as you enter them, you may have to change the scale.
00:45
As you can see, my scale goes from 0 to 20 for the number of hours studying and 0 to 800 for the score.
00:55
But once you have that scale set up, you should see all your data points.
01:00
Being populated on the graphing calculator.
01:05
Now in the next step, what we need to do is we need to tell desmos to create the line of best fit.
01:10
So it's going to try to create an equation of a line that best fits that data.
01:15
So to do that, i have that captured on my next slide.
01:20
After our data has been entered, we click on the next box under their table, and we type in the equation y1.
01:31
And then this symbol is a tilde...