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jeanmallo

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Posts: 7
Reply with quote  #16 
jlbriggs - I cannot see whether you've shared a chart that Stephen is referring to, so couldn't quite follow the conversation.
jeanmallo

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Posts: 7
Reply with quote  #17 
Are you thinking that something like this would be better?



agegender2.png 

jlbriggs

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Posts: 200
Reply with quote  #18 
Jean - my previous post has two images in it. One is a remake of the age/gender chart, and the other is a remake of the source of referral chart.

My assumption about the population line appears to be the correct assumption. I would not, however, apply it to the same chart on a second y axis as you have in the latest iteration - this causes a variety of confusions, primary among them being the interaction between the lines and the bars, which, since they are plotted on two separate scales, are meaningless. Even though the interaction is meaningless, users will focus on them more often than not, and potentially draw invalid conclusions.

My version showed the measure for referrals as a set of frequency polygons (turn your bars into two lines instead), and below that, aligned with the same x axis, a separate plot of the variance, also as two lines.
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