Finer categories might be useful and shouldn’t compromise anonymity too much, especially at the low end. This breakdown looks OK to me:
no karma score mentioned (341),
0 or less (144),
1-4 (39),
5-9 (27),
10-19 (38),
20-29 (29),
30-49 (40),
50-99 (52),
100-199 (45),
200-299 (27),
300-499 (30),
500-999 (38),
1000-1999 (37) and
2000+ (43).
Numbers in brackets are the number of responses in each category on the 2011 survey. Note that another survey now would get even more responses in most categories.
(Personally I’m OK with Yvain’s laissez-faire approach of letting people round karma scores themselves to the degree they want. But I can see why using discrete categories to enforce privacy might be more robust.)
[Edited after army1987 posted his comment to clarify the bracketed numbers.]
That looks great, but I’d split the top range into two (because I don’t feel that comfortable in being lumped with EY et al.) and 50-99 and 100-199 (for consistency, so none gets >40 respondents in the last survey).
Finer categories might be useful and shouldn’t compromise anonymity too much, especially at the low end. This breakdown looks OK to me: no karma score mentioned (341), 0 or less (144), 1-4 (39), 5-9 (27), 10-19 (38), 20-29 (29), 30-49 (40), 50-99 (52), 100-199 (45), 200-299 (27), 300-499 (30), 500-999 (38), 1000-1999 (37) and 2000+ (43). Numbers in brackets are the number of responses in each category on the 2011 survey. Note that another survey now would get even more responses in most categories.
(Personally I’m OK with Yvain’s laissez-faire approach of letting people round karma scores themselves to the degree they want. But I can see why using discrete categories to enforce privacy might be more robust.)
[Edited after army1987 posted his comment to clarify the bracketed numbers.]
That looks great, but I’d split the top range into two (because I don’t feel that comfortable in being lumped with EY et al.) and 50-99 and 100-199 (for consistency, so none gets >40 respondents in the last survey).