You can do it following these steps:

1. Define a case field within the Summary Statistics tool (some sort of ID field).
2. Use [Join Field][1] tool to join the summary table back to your original layer
3. Use [Select Layer by Attribute][2] tool to define your selection based on your expression

Hope that helps.


  [1]: http://resources.arcgis.com/en/help/main/10.1/index.html#//001700000065000000
  [2]: http://resources.arcgis.com/en/help/main/10.1/index.html#//001700000071000000