Douglas_Knight comments on LW survey: Effective Altruists and donations - Less Wrong

18 Post author: gwern 14 May 2015 12:44AM

You are viewing a comment permalink. View the original post to see all comments and the full post content.

Comments (38)

You are viewing a single comment's thread. Show more comments above.

Comment author: gjm 15 May 2015 04:08:14PM 3 points [-]

It's alleged that the number of people donating zero is large, and more generally I would expect people to round off their donation amounts when reporting. Ages are clearly also quantized. So there may be lots of points on top of one another. Is it easy to jitter them in the plot, or something like that, to avoid this source of visual confusion?

Comment author: Douglas_Knight 24 May 2015 08:53:11PM *  1 point [-]

Apply jitter() inside of qplot. Also, transparency:

qplot(jitter(Age), jitter(CharityLog,a=0.1), color=EffectiveAltruism, data=survey,alpha=I(0.5))

Default jitter() worked great on Age, but was negligible on CharityLog.