The accompanying table gives the cost and an over-all quality rating for 15 different brands of bike helmets (www.consumerreports. org).

a. Construct a scatterplot using y = quality rating and x = cost.
b. Based on the scatterplot from Part (a), does there appear to be a relationship between cost and quality rating? Does the scatterplot indicate that the more expensive bike helmets tended to receive higher qual-ity ratings?

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