On Monday 20 April 2009, Piotr Konieczny wrote:
Nearly 20% of contributors claimed either a Masters or PhD degree.
You are including "other" in this gloss, not sure if that's appropriate. Here's my summary:
Preliminary results of 130,576 cases with respect to: gender (12.83% female); age (25.8 years average; 22 years median); education (28.89% undergraduate; 11.85% Masters; 3.10% PhD); donation (42.03% don't know how; 19.73% didn't know it was a nonprofit; 18.80% donate time instead of money); contributions (62.5% pure readers; 24.5% contributors, 1% administrators); country, partner (30%), children (14%), hours (4.3 on average), motivation to contribute (like the idea of sharing, wanted to fix an error, ...), reasons for not contributing (51.98% don't have enough information to contribute, 48.53% happy just reading Wikipedia), factors that would increase contribution (42.23% help with identifying areas that need input, 32.95% some form of feedback showing how contributions help).