Table: 1976 world junior figure skating championships
Question: What is the average points earned by skaters from  North America in the 1976 world junior figure skating championships? 
Step 1 (Reasoning, Geographical/Spatial Reasoning): North America
Step 2 (Operation, Filter): nation
Step 3 (Operation, Indexing): points
Step 4 (Reasoning, Aggregating): AVG, points
Answer: 169.52