Relationship between Estimated and Actual Time to Complete a house painting Job. Charlene & Daughters (C&D) employees 20 crews of interior house painters that work throughout the northwest United States. The leader of each crew is responsible for visiting potential job sites and developing an estimate of the number of hours it will take to complete a job based on a C&D formula that considers the square footage of the surfaces to be painted, the amount and type of trim, and whether ceilings are to be painted. The crew leader also has the latitude to make subjective adjustments based on other factors that are not considered by the formula. C&D is now assessing the accuracy of its estimates of the time it will take to complete jobs. It has collected the estimated and actual times to complete each of the 10 most recent jobs for each crew, and it has entered these data into the file C&DChart.xlsx. A portion of the data, which includes the name of the crew leader, the estimated time to complete the job, and the actual time to complete the job, follows. C&D has also used these data to produce a scatter chart, and it has