How much does the price of a plane ticket affect the decision to fly? The relationship between the number of passengers and an average ticket price for domestic flights was investigated. Results are shown in the scatterplot below.

Which is theindependentand which is thedependentvariable in this example?

Relationship between ticket price and the number of passengers 1200 1000 800 Number of passengers ('000) 600 400 200 0 90 100 110 120 130 140 Average ticket price ($)