X date speed dating
Please note that I normalized the ratings for "like" and "probability" (of getting yes) because the actual rating scale differs from person to person.
You subtract the mean from the data to center the data around zero and then divide by the standard deviation to normalize the value range.
Let's compare the self-rating for attractivess to the average ratings participants received.
If you subtract the average ratings received from the self rating, you can see how much people overestimate their attractiveness.
We should also remember that the data comes from those who went to Columbia at that time - as indicated by such variables as the field of study - and therefore the findings may not generalize to other situations.
Of course I also totally lack practical experience in speed dating - if you do, please let us know what you think of this analysis compared to your own experience below.
At the end of the evening everyone marks on a card who they would like to date again and who they wouldn't.
Given that people are not always good at assessing their own attractiveness, how does it affect the ultimate goal - getting matches?
Let's focus on average looking people (people who rate themselves 6 or 7) only to level the field and see how the self assessment affects the outcome.
One possible reason we are not so good at judging our own attractiveness is that for majority of people it it in the eye of the beholder.
If you plot to standard deviations of ratings people received, the spread is pretty wide, especially for men.