Starstruck and doubled over: losing poise over Indian charts

August 9, 2017
By

(This article was originally published at Junk Charts, and syndicated at StatsBlogs.)

Twitter follower @ashwink_s didn't see eye-to-eye with the following charts that appeared in an Indian publication.

There is the infamous racetrack chart:

ET_marketspoll_5

In the racetrack chart, the designer has embedded data in the angles at the center of the concentric circles but the visual cues point to the arc lengths. If the same proportion of people voted Yes as voted No, the two arcs should look like this:

Redo_etmarketspoll_racetrack1

The length of the red arc is much larger than the length of the gray arc, even though they encode the same value. There is no reason to double over, just pull them back straight pronto!

Redo_etmarketspoll2b

***
Next, we have a busy chart:

ET_markets_poll

We are starstruck.

All those stars are redundant as they just illustrate the rating numbers printed to their left. The story here is that the government received a 7.5 rating, with no one rating it below 4, and the majority giving a 7 or 8. (It's curious that no one at all rated the government below 4. In most rating polls that I've come across, primarily in the U.S., there are extreme views.)

After the makeover:

Redo_etmarketspoll_figures3

 

 P.S. Thanks to Matt F. who noticed the switched bars in the original post, and messaged me. The chart has now been fixed.

 



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