The table below lists the scores of eight research participants on a test to measure anxiety, as well as the typical number of cigarettes each person smokes daily. Scores on the anxiety test can range anywhere from a low of 0 (indicating very low anxiety) to a high of 30 (indicating very high anxiety).

Research

Anxiety

Cigarettes

Participant

Test Score

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1

8

11

2

9

3

3

15

11

4

14

16

5

21

26

6

12

10

7

22

24

8

17

18

Construct a scatterplot to represent the correlation between smoking and anxiety. Describe the direction of the correlation and give two possible explanations for it.