The range in Fantasy first novel advances is from $0 to $40,000.
The average first novel advance is $6966 for Fantasy.
The median first novel advance is $5000 for Fantasy
The range in Science Fiction first novel advances is from $0 to $20,000.
The average first novel advance is $6555 for SF.
The median first novel advance is $5000 for SF.
There were some paranormal/gothic, horror, and some entries unlabeled that were all in the average area, which is why the broken out data averages slightly higher than the unaveraged.
While the median for SF and F are the same, Fantasy trends higher by about 10% in the averages. This could be explainable by the margin of error I set forth initially, however this data consistently holds true through the rest of the data set, so I'll hazard the opinion that this trend indicates higher clusters of advances in Fantasy, right around the 7500-10,000 range, on first advances, more so than in SF.