Table: 1994 open championship
Question: What is the standard deviation of scores for players from the United States who finished in the top 10 at the 1994 open championship?
Step 1 (Operation, Indexing): score
Step 2 (Reasoning, Geographical/Spatial Reasoning): United States
Step 3 (Operation, Grouping): country
Step 4 (Reasoning, Aggregating): STD, score
Answer: 1.699