Construct a scatter diagram using the table to the right. This data is from a st

Question

Construct a scatter diagram using the table to the right. 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. 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 increases.

Explanation / Answer

The Scatter diagram of Tar and Carbon monoxide (CO) is

and correlation between Tar and CO is = 0.9717

calculated by EXcel command " =CORREL(Tar data range,CO data range) "

therefore there is strong positive linear relationship between them. It means as amount of Tar increases, the amount of carbon monoxide is also increases.

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