Question

Use the tables to create scatterplots and determine which scatterplot shows a linear association.

a. |x|5 |8 |2 |4 |6 |12 |10 |1 |3 |7 |
|y|800|700|350|450|500|1000|900|250|400|750|

b. |x|5 |8 |2 |4 |6 |12 |10 |1 |3 |7 |
|y|550|800|350|450|700|1000|900|250|400|750|

c. |x|5 |8 |2 |4 |6 |12 |10 |1 |3 |7 |
|y|550|800|250|300|700|1000|650|300|100|700|

d. |x|5 |8 |2 |4 |6 |12 |10 |1 |3 |7 |
|y|550|800|250|500|500|400|650|150|400|750|

Answer 1

The scatterplot that shows a linear association is plot b:

|x|5 |8 |2 |4 |6 |12 |10 |1 |3 |7 |
|y|550|800|350|450|700|1000|900|250|400|750|

This is because as x increases, y increases in a relatively consistent manner.