Describing the decrease in the number of customer

Describing the decrease in the number of customer

Jordan, the sales manager of a local car rental service, wants to write a report describing the decrease in the number of customer complaints. He is trying to decide between using a bar chart or a line graph to supplement his discussion in the report. Which of the guidelines for visual design is he following?

• Choose the right visual for the story
• Use color and decoration with restraint
• Follow the conventions for designing typical visuals
• Check the quality of the data
• Be accurate and ethical