Download the starter file from Tableau Public and create this chart. You’re going to be creative with the y-axis and set it to start at 85% instead of 0%.

Columns shelf: Month field

Rows shelf: Project Completion Rate field

Mark Type: Line chart

Y-Axis: Right-click the axis, then choose Edit Axis. Select ‘Fixed’, and the start value is .85. Make sure “Include zero” is not selected.

Initially, Alex’s performance data appears misleading due to a carelessly truncated axis range. After you adjust the axis minimum to zero, it provides a true visual representation. Now, re-analyze Alex's results.