Table: list of schools in the wellington region
Question: Is the average roll of schools in Wellington region with a decile above 7 greater than the average roll of schools with a decile below 5? Answer with only 'Yes' or 'No' that is most accurate and nothing else.
Step 1 (Operation, Grouping): decile
Step 2 (Operation, Indexing): roll
Step 3 (Reasoning, Aggregating): AVG, roll
Step 4 (Reasoning, Arithmetic): comparison, average roll
Answer: Yes