user: Question: Week of 7 had what average attendance?
Columns: ['Week', 'Date', 'Opponent', 'Result', 'Venue', 'Attendance']
Types: ['real', 'text', 'text', 'text', 'text', 'real']
Sample row: [1.0, 'September 16, 1962', 'Minnesota Vikings', 'W 34-7', 'City Stadium', 38669.0]
SQL:

assistant: SELECT AVG("Attendance") FROM "Table" WHERE "Week" = 7.0;