Ann K. Emery I design information and share my strategies through keynotes and custom workshops. - page 3

Bar Charts: Vertical or Horizontal?

Bar Charts: Vertical or Horizontal?

“Ann, should my bar charts be horizontal or vertical?” Ordinal variables get vertical bars Ordinal variables follow a natural progression—an order. I arrange ordinal categories from left to right so my viewers can view the sequence across the page, which means their bars are vertical. Use…

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Bar Charts: Regular or Stacked?

Bar Charts: Regular or Stacked?

Chart choosing is part art and part science. During workshops, I cover my chart choosing thought process in more detail. For now, let me save you hours of time with this not-so-secret secret: Start with a bar chart. Then, fine-tine your bar chart. Try your…

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The Axis: Actual Maximum Value or Potential Maximum Value?

The Axis: Actual Maximum Value or Potential Maximum Value?

Fine-tune your graphs by discussing this question with your colleagues: should our graph’s axes extend to the dataset’s actual maximum value or to the potential maximum value? Option A: Axis stretches just past the actual maximum value (30% in this example) The biggest number is 26%, and…

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The Data Visualization Checklist, 2016 Edition

The Data Visualization Checklist, 2016 Edition

Back in 2014, we launched the Data Visualization Checklist. Today, we bring you the updated version! Download your revised Data Visualization Checklist. What’s included in the updated Data Visualization Checklist? Stephanie and I tweaked five items: Text size is hierarchical and readable Labels are used…

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Removing the Double Y Axis

Removing the Double Y Axis

My least favorite charts of all time include clustered bar charts, 3D exploding pie charts, and line charts with two y axes. By now, hopefully you know my style. I’m not just going to complain about a graph without offering an alternative. Sometimes we need…

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