This poll has now closed. There was a good response to this study, with 292 participants. The results show that over 51% of respondents indicated that they had no debt. Their posts make clear that many of this group do in fact have short term credit card debt, meaning that the true percentage without "any debt whatsoever" is smaller. The cumulative percentage of this "no debt" group and those reporting a debt to asset ratio of <10% is close to 85%. The curve is significantly skewed to the left. My impression is that the majority of the respondents, at least those who participated in the (lively) discussion, were already retired.
I had not anticipated a normal distribution, but I had thought the skew would be less pronounced, based on the never ending discussions about paying off mortgages in retirement. One poster indicated that the categories should have increased by 5% rather than 10%. To implement such a study design would have required many more categories, which would have made the study more difficult to interpret with a small dataset, or a lower cutoff, which would have masked the fact that a small minority of respondents have a debt to asset ratio of >40%.
The results are informative and I thank everyone who participated. Mods, please close this thread when you feel it appropriate.