Monthly archive for January2017

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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