How to Choose Which Type of Graph to Use? When to Use . . .. . . a Line graph. Line graphs are used to track changes over short and long periods of time. When smaller changes exist, line graphs are better to use than bar graphs. Line graphs can also be used to compare changes over the same period of time for more than one group.. . . a Pie Chart.
Mar 15, 2011 · Grading. Guatemala Green Coffees. The Guatemalan coffee grading system defines the Strictly High Grown / Strictly Hard Bean (SHB) grade to include coffee beans grown at elevations higher than 1350 meters above sea level, while the Hard Bean (HB) grade includes coffee beans grown between 4,000 feet and 5,000 feet above sea level.