Researchers found a moderate correlation between the length of a customer's driveway and size of the tips the customer gave pizza delivery people.The longer the driveway, the smaller the tip the delivery person received.The correlation coefficient that most likely represents this relationship would be:

Question

Quizplus · Accepted Answer

The correlation coefficient ranges from -1 to +1, indicating the strength and direction of the relationship between two variables. A correlation coefficient of +1 indicates a perfect positive correlation where the values of both variables increase together, whereas a correlation coefficient of -1 indicates a perfect negative correlation where one variable increases while the other variable decreases.

In this scenario, the researchers found that as the length of the customer's driveway increased, the size of the tips decreased, indicating a negative correlation. Therefore, the best choice is B, which represents a negative correlation coefficient of -0.45.

Researchers Found a Moderate Correlation Between the Length of a Customer's