user: Question: What was the average attendance on October 30, 1938?
Columns: ['Week', 'Date', 'Opponent', 'Result', 'Attendance']
Types: ['real', 'text', 'text', 'text', 'real']
Sample row: [1.0, 'September 11, 1938', 'at Philadelphia Eagles', 'W 26-23', 20000.0]
SQL:

assistant: SELECT AVG("Attendance") FROM "Table" WHERE "Date" = 'October 30, 1938';