#### A bus company wanted to know if the number of complaints they received was a function of the number of buses it ran the company carried out a study comparing the average number of buses per hour for different days and the number of complaints that it received on those days the results are shown in the graph below

equation of regression line
calculating the equation of the regression line
scatter plots
ap statistics

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- Is there an association between the variables?
- Does the graph have a negative slope?
- Write down the equation of the regression line.