Enhancements for disparately sized samples & baselines

![screen shot 2014-10-24 at 8 05 08 pm](https://cloud.githubusercontent.com/assets/1043291/4797610/c2b05686-5e0c-11e4-919b-73a3fa9f0b3a.png)
![screen shot 2014-10-24 at 8 04 47 pm](https://cloud.githubusercontent.com/assets/1043291/4797611/c2b7d51e-5e0c-11e4-9852-9d685064539a.png)
![screen shot 2014-10-24 at 8 04 31 pm](https://cloud.githubusercontent.com/assets/1043291/4797612/c2c2dfc2-5e0c-11e4-8ad0-8c2d5b3fc2e6.png)