user: Question: What was the average when the strike rate is 75.78?
Columns: ['Rank', 'Runs', 'Average', 'Strike rate', 'Player', 'Matches', 'Innings', 'Period']
Types: ['real', 'real', 'text', 'text', 'text', 'real', 'real', 'text']
Sample row: [1.0, 13430.0, '32.3', '91.21', 'Sanath Jayasuriya', 445.0, 433.0, '1989-2011.']
SQL:

assistant: SELECT "Average" FROM "Table" WHERE "Strike rate" = '75.78';