Scatter graphs and correlation

What you'll learn

1. 1

   Imagine you have a bag of sweets and you want to see if more sweets mean more fun. A scatter graph shows two things on one picture.

2. 2

   How many things does a scatter graph compare at once?

3. 3

   Here is a scatter graph showing hours of study and test scores. Each dot is one student.

4. 4

   Drag the dots to show that more ice cream eaten means more sunburn. Make them go up and right.

5. 5

   Let's look at this scatter graph about hours of TV and fitness. Do more hours mean less fitness?

6. 6

   If dots go up and right as one thing increases, what kind of correlation is that?

7. 7

   What does it mean if the dots are all over the place with no pattern?