Table: matariki network of universities
Question: How much variation is there in the year established among the members of the Matariki Network of Universities?
Step 1 (Operation, Indexing): year established
Step 2 (Reasoning, Aggregating): MAX, year established
Step 3 (Reasoning, Aggregating): MIN, year established
Step 4 (Reasoning, Arithmetic): -, variation
Answer: 434