Tag archive for Scale

Visualizing Survey Results: Assessing Knowledge Before and After a Program

Visualizing Survey Results: Assessing Knowledge Before and After a Program

A couple weeks ago I spoke to Harvard University graduate students about visualizing survey results. This not at all to very survey scale is quite common in my research circles so I’m sharing our ideas with all of you, too.   Before Here are some of the…

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The Graph’s Scale: Actual Maximum Value or Potential Maximum Value?

The Graph’s Scale: 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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Be Careful with the Y-Axis…

Be Careful with the Y-Axis…

I was recently working with an organization to improve their graphs for an upcoming conference presentation. Notice anything funny about the height of these bars? The shortest bar, for 2012, represents 26,000 youth. But the tallest bar, for 2010, represents 27,000 youth. 26,000 and 27,000…

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This is What Equidistant Axis Labels Look Like

This is What Equidistant Axis Labels Look Like

Let’s pretend you’re tracking whether friendly reminder messages bring in more responses to your survey. Can you spot the fatal flaw? See it? Go check out the x-axis. Where the heck are Days 5, 6, 7, 12, 13, 14, and 20? (This is where you…

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Introducing the Data Visualization Checklist

Introducing the Data Visualization Checklist

This post has been a long time coming. Stephanie Evergreen and I knew some time ago that evaluators and social scientists had a thirst for better graphs, a clear understanding of why better graphs were necessary, but they lacked efficient guidance on how, exactly, to make…

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