(This article was originally published at Junk Charts, and syndicated at StatsBlogs.)
Reader Conor H. sent in this daily medals table at the NBC website:
He commented that the bars are not quite the right lengths. So even though China and Russia both won five total medals that day, the bar for China is slightly shorter.
One issue with the stacked bar chart is that the reader's attention is drawn to the components rather that the whole. However, as is this case, the most important statistic is the total number of medals.
Here is a different view of the data:
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