bar chart

23 posts
Looking above the waist, dataviz style

I came across this chart on NYU's twitter feed.  Growth has indeed been impressive; the dataviz less so. Here's the problem with not starting the vertical scale of a column chart at zero: In a column chart, the heights of the columns should be proportional to the data. Here they are misaligned because an equal amount has been chopped off below 30,000 from all columns. The light purple that I...

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When design goes awry

One can't accuse the following chart of lacking design. Strong is the evidence of departing from convention but the design decisions appear wayward. (The original link on Money here)   The donut chart (right) has nine sections. Eight of the sections (excepting A) have clearly all been bent out of shape. It turns out that section A does not have the right size either. The middle gray circle is not...

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Light entertainment: the difference in power between nations is not statistically significant

As proved by the following chart:  

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When your main attraction is noise

Peter K. asked me about this 538 chart, which is a stacked column chart in which the percentages appear to not add up to 100%. Link to the article here. Here's my reply: They made the columns so tall that the "rounding errors" (noise) disclosed in the footnotes became the main attraction. *** The gap between the highest and lowest peaks looks large but mostly due to the aspect ratio....

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It’s Been a Hot Summer, Down Under

My family is vacationing this week in Mosman, Australia, a harbourside Sydney suburb near Balmoral Beach known for its family friendly attractions and boutique shops. This place is a great holiday spot. There’s only one problem this year, though: It’s been quite hot. Sydney is normally relatively temperate during the summers, which occur opposite winters in the Northern Hemisphere. The average temperature in Celsius this time of year usually runs...

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Light entertainment: this looks like a bar chart

Long-time reader Daniel L. said this made him laugh. This prompted me revive a feature I used to run on here called "Light entertainment." Dataviz work that are so easy to ridicule that one wonders if they weren't just made for the laughs. See all previous installments here. Daniel also said it fails the Trifecta Checkup. What is the question the chart is addressing and what's the message? It's a...

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Verging on trust

I’m not quite done with that Verge survey on social media popularity. Last time, I discussed one of the stacked bar charts about how much users like or dislike specific brands such as Facebook and Twitter. Today, I look at the very first chart in the article. This chart supposedly says users trust Amazon the most among those technology brands, just about the same level as customers trust their bank....

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Using a bardot chart for survey data

Aleks J. wasn't amused by the graphs included in Verge's report about user attitudes toward the major Web brands such as Google, Facebook, and Twitter. Let's use this one as an example: Survey respondents are asked to rate how much they like or dislike the products and services from each of six companies, on a five-point scale. There is a sixth category for "No opinion/Don't use." In making this set...

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Fifty-nine intersections supporting forty dots of data

My friend Ray V. asked how this chart can be improved: Let's try to read this chart. The Economist is always the best at writing headlines, and this one is simple and to the point: the rich get richer. This is about inequality but not just inequality - the growth in inequality over time. Each country has four dots, divided into two pairs. From the legend, we learn that the...

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Three pies and a bar: serving visual goodness

If you are not sick of the Washington Post article about friends (not) letting friends join the other party, allow me to write yet another post on, gasp, that pie chart. And sorry to have kept reader Daniel L. waiting, as he pointed out, when submitting this chart to me, that he had tremendous difficulty understanding it:   This is not one pie but six pies on a platter. There...

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