The health information reception desk is experiencing a huge influx of phone calls on Monday, Tuesday, and Wednesday mornings. This is creating a problem in getting requested patient information out within an acceptable time frame. The reception staff work group has agreed to start recording the reason for the phone calls for the next 4 weeks. They want to focus on solving the response-time problem by reducing the turnaround time for the largest category of phone calls. Which QI tool best supports this goal?
A. Pareto chart
B. scatter diagram
C. control chart
D. run chart