Question

construct a scatter diagram using the data table. this data is from a study comparing the amount of tar and carbon monoxide (co) in cigarettes. use tar for the horizontal scale and use carbon monoxide (co) for the vertical scale. determine whether there appears to be a relationship between cigarette tar and co.

tar	co	tar	co	tar	co
9	11	8	11	11	13
1	1	16	14	6	7
13	13	18	18	15	15
5	7	11	11	9	8

construct a scatter diagram.

is there a relationship between cigarette tar and co?

a. no, there appears to be no relationship.
b. yes, as the amount of tar increases the amount of carbon monoxide decreases.
c. yes, as the amount of tar increases the amount of carbon monoxide also increases.

Explanation:

Step1: Analyze scatter - diagram features

In a scatter - diagram, if the points tend to form an upward - sloping pattern, it indicates a positive relationship. If they form a downward - sloping pattern, it's a negative relationship. If the points are randomly scattered, there is no relationship.

Step2: Examine given data and diagrams

By looking at the data pairs of tar and CO values and comparing with the scatter - diagram options, we can see that as the value of tar (horizontal axis) increases, the value of CO (vertical axis) also increases. This indicates a positive linear relationship.

Answer:

C. Yes, as the amount of tar increases the amount of carbon monoxide also increases.